Before giving over a Sanzer story our Rebbe would first mention that he had heard the story in Bobov (ie from the Bobover Rebbe). 
1. The Surgery 
The story is that Reb Chaim Sanza had a lot of trouble with his foot. Finally it came to such a point that he needed an operation. It was a very painful operation and the doctor wanted to give him something ... put him to sleep, give him an injection. So the doctor said to Reb Chaim, "I have to give you an injection because it's very painful." Reb Chaim said, 'I'll make a deal with you, you don't have to give me an injection... you can do your thing, and let me do my thing, but do me one favor. I shall do what I have to do and I don't know how long the operation will last. If I don't open my eyes after the operation, don't disturb me. Maybe I shall be lying on the operation table for a few more hours, it is because I must do what I have to do ... don't disturb me. Promise me that you won't." The doctor promised him. Then Reb Chaim Sanza closed his eyes and looked like he was not in this world. After the operation was over the doctor said, "I'm really afraid that he died during the operation. Reb Chaim's children said, "Leave it up to our father, he is okay--if he says he is okay, he is okay." For the next four hours Reb Chaim Sanza was lying on the operation table and then he opened his eyes and said, "How was the operation, okay?" The doctor then said, "I hope you don't mind me asking you, but what did you do, what did you really do?" So he says like this "I want you to know, my holy master, Naphtali Ropeschitzer, taught me something ... We know how to feel joy on the level of the world, right? We always need a reason for joy, to feel pure joy, right? We live in a world of reason. I have a reason for joy, and I have a reason for pain. Everything is reason. My holy master taught me something, that I can receive joy for no reason. But he says that I cannot always be there, but when I'm there, I'm really there. So once you told me I was going to have a lot of pain, I just got myself on the level of receiving pure joy. That's what it is." 
2. The Holy Sanzer on "Torah" House of Love and Prayer, San Francisco, 5732. Transcribed by Donna Anderson Maimes for the Holy Beggars' Gazette 
Remember the Torah of Reb Chaim Sanza? If Reb Chaim hadn't said it, it would be a great blasphemy. Reb Chaim asks the question: Why did G-d give us the Torah on Mt. Sinai? Why did He write everything down in a book? Isn't the most important thing to know every moment what is right? The truth is that from books we don't know what is right at every moment. To really know you have to be plugged into G-d, you have to be a Tzaddik who cleaves to G-d every minute. So, Reb Chaim says a sad thing, that the Torah was written down only for people who are not such holy tzaddikim. Those who are not plugged in must have it written in black and white. This is not the ultimate, but if it were it not that Reb Chaim Sanza had said it, literally it would be blasphemy to say such words -- that the Torah was given only for people who are not plugged in. Because if you are really plugged in every minute you know exactly what you have to do. You don't have to take out the book and look at it. But we need the book to be plugged in... 
3. In Ropshitz The Holy Sanzer couldn't decide whether to follow the Yid haKodesh, (the Holy Jew of Psische) or the Ropshitzer. So he sat at the crossroad and prayed to receive a Divine Sign. Immediately the Sanzer encountered a Hasid, who told him, "Why are you sitting here in the middle of nowhere. Come I'll take you home. You'll meet my father." That's how the Sanzer met the father of the holy Zhikover, the holy Reb Naftali of Ropshitz. Now in Ropshitz, they daven silently. But the Sanzer couldn't hold himself back without letting out a "shrii". So he'd find a closet somewhere or daven in the beis medresh when nobody else was there. Once the Ropshitzer wandered into his beis medresh to find the Sanzer there, praying his lungs out. Impressed by this utter lack of self-consciousness, the Ropshitzer asked the other Hasidim to allow the Sanzer to daven in whatever manner he chose. Reb Haym commuted between Sanz and Ropshitz in absolutely no time at all making full use of the Kabbalistic secrets of Kfitzas haDerekh. However, on one occasion, the Sanzer stopped at a kretchmer (Marriott) along the way. The owner of the kretchmer had lain herself down on the road in front of the Sanzer's carrage. The horses halted their galloping on a dime, the Sanzer got out of the carrage and spent the night there. This one time he got to Ropshitz a day late. When asked, the Sanzer explained, "The woman was ready to put her life in my hands just in order to see me. So how could I not stop and stay in her kretchmer?" 
4. The Cane The Holy Sanzer needed a cane in order to walk. Before the Sanzer wedding, his future wife initially refused the match, not wishing to marry this cripple. Reb Hayim called on her and asked that she look into a mirror. Doing so, she saw she, not Reb Hayim, was lame. The Sanzer explained, "Before you were born, it was decreed in heaven that you be the lame one, until I prayed that our places in this world be reversed." Nobody could get a zetz from the Sanzer's cane and not leave this world without fixing what he came here to do. In later years, the Sanzer discontinued using his cane on the hasidim, until the wedding of his youngest grandaughter. The hasidim lined up before the Rebbe and each got a zetz from the cane of the Holy Sanzer. The Sanzer's cane was passed down the generations up until the present Rebbe of Bobov at the time of the second World War. Recognized by the SS, the Bobover jumped off a train, having to leave the Sanzer's cane behind him. The Bobover escaped, but the cane was taken by the SS. The Sanzer's cane was never seen again, though it is said that the fuehrer, crippled after an attempt on his life, walked with this cane at least once. Nowadays, when Megillah is read in Bobov, the Rebbe gives a tap with his cane each time Haman's name is mentioned. 
5. A Hot Cup of Coffee Although he suffered from a seemingly incurable physical ailment, the Sanzer was famous for his power of healing others. Many came from far and wide to seek his blessings. Once an elderly hasid, suffering from tuberculosis, was loaded onto a wagon and brought from his distant village to see the holy Sanzer. Reb Chaim told the family. "Take your father home and make a hot cup of strong black coffee for him to drink." "Are you crazy," the children exclaimed, "Coffee will kill a man in his condition!". But Reb Chaim repeated, "Take your father home and make a hot cup of strong black coffee for him to drink." So they took their father home and gave him a hot cup of coffee to drink, and the old Hasid was healed. A few years later, the father suffered from a relapse of his illness. This time the family thought, "Let's spare our father the arduous journey to Sanz". So they prepared a hot cup of coffee and immediately the father began to cough up blood. So they loaded him onto a wagon and brought him back to Sanz. The Sanzer asked the family what the problem was all about, so the children explained that their father had tuberculosis and that they had given him coffee to drink and that his condition had worsened. "Murderers!" exclaimed the Sanzer, "Coffee will kill a man in his condition!" "So what can we do", they asked. "Take your father home and make a hot cup of strong black coffee for him to drink." So they took their father home and gave him a hot cup of coffee to drink, and the old Hasid was healed again. 
6. The Paretz's Daughter At the funeral of the Holy Sanzer, a nobleman and his wife were seen crying inconsolibly. Curious as to the connection of this obviously non-Jewish couple with their Rebbe, the Hasidim came to them and asked them how they had heard of the Rebbe. The nobleman's wife proceded to tell the Hasidim the following story. Years earlier a Hasid of the Sanzer in a faraway town had gotten into serious trouble. Once a successful businessman, the Hasid had somehow fallen out of favor with his non-Jewish business associates and had been accused of fraud and corruption. Now the Hasid faced trial in the criminal courts and certain conviction, fine and imprisonment for many years. Nearly penniless, the Hasid made the long trip to Sanz. But as soon as he got to the Rebbe, the Holy Sanzer said that there was absolutely no time, that the Hasid must leave Sanz immediately and travel home in the First Class section of the train. The Sanzer sent the Hasid out of his room, refusing all the Hasid's entreaties to be heard. So the Hasid sold all his remaining posessions and purchased a seat in the First Class coach on the train home. The penniless Hasid stood out among the other wealthy passengers on the train. Throughout the long ride home, as the train filled up, other passengers would take look at this tattered beggar and find other places to sit. As the train neared Sanz, a "Paretz" (Nobleman) entered the train, and finding nowhere else to sit, joined the former rich Hasid in his compartment. Curious, the Paretz asked the Hasid why he had spent his obviously meager resources on a seat in the First Class section. So the Hasid proceeded to tell the Paretz the entire story of how he had fallen on hard times and had come to his Rebbe for advice, only to be told to leave immediately for home in a First Class coach. The next day the Hasid came to court. Lo and behold, as the judge entered the courtroom he was flabbagasted to see that the judge was his companion on the train ride home a day earlier. Showing no sign of recognizing this Hasid, the judge called on the prosecutor and the Hasid's former associates who presented their case. Immediately, the judge rose and scolded them severely for having wasted the court's time on such a frivolous case, saying that they, not the Hasid, should have been on trial. The judge then ordered them to pay heavy fines and full restitution to the Hasid for having ruined his business, putting the scoundrels on notice that were they ever seen in his court again, they would go straight to prison. Overjoyed, the Hasid approached the judge to thank him, but, the judge asked to see him in private immediately. In his chambers, the judge asked the Hasid for directions to Sanz. Thus the Paretz came to see the Holy Sanzer. Upon meeting the Rebbe, the Paretz told over his story and how his only daughter was suffering from a fatal illness. "A Rebbe such as you who knew enough to put the Hasid in the same First Class train as myself, must certainly have miraculous healing powers." The Rebbe then told the nobleman that his daughter would indeed be healed miraculously on one condition -- that no one else know that. So the girl would have to continue seeing doctors for six months and follow all their advice, and that the Paretz was to tell no one about his ever having heard of, let alone met, the Rebbe. "So you see," said the lady to the Hasidim, "I am that nobleman's daughter. Because of your Rebbe, I am here today." 
7. The Levaya (Funeral) In pain and tears, a Hasid cried out to the sobbing masses, "The sun has set, never to rise again". But a very old man, called out in response, "Most of you weren't there, but many, many, years ago, I was at the levaya of the holy Hozeh, the Seer of Lublin, who saw from one end of the world to the next, and someone else made the exact same remark. But the sun did rise with the birth of the Holy Sanzer, and though the sun has now set, it will rise yet again." Our Rebbe gave over this story many times. The story was last told at our Rebbe's levaya in New York. 