The explanation for the class of occurrences comprising the supernova would be very similar to, and of the same type as the C-R theory predictions made for the Nova.
Conventional theories would ascribe the properties of the supernova mostly due to the ongoing fusion reaction at the center of a star, denser and heavier than our sun. Those theories claim the resulting supernova would be the final show at the end of the energy-output life of a star. As the star exhausted it's last nuclear hydrogen available for fusion into helium, the only remaining nuclear fuel would be helium and heavier elements, up to iron.
As the nuclear fuel runs out, the star finally fuses heavier elements into either iron or lead. Eventually, the energy output from the fusion reaction dwindles, and the outward push on the star's gas-plasma cloud from the heat-energy of fusion drops off. The extended ball of gas-plasma cools, it shrinks.
The infall of this heavy, condensed matter on the outermost layer of the star creates a shock wave. At this layer, the temperature and pressure skyrocket and one last burst of the fusion reaction creates its last great flash of energy. The compression from the collapse would combine the remaining, heavier, less reactive elements to produce a very brief, but extraordinarily brilliant spectacle, the supernova.
In a fraction of a second, the supernova would expend more energy than an entire galaxy of stars. The entire outer portion of the parent star's mass would be expelled at a tremendous velocity.
The shock wave would also force the remaining elements to collapse inwardly. As the pressure and the gravity would intensify, the core's elements would be less able to retain any further loose-packing. Afterwards, the only expected object remaining where the star had been would be a super dense, rapidly spinning, neutron star.
What the C-R theory says about supernova's (and their cause):
By the C-R theory, the events leading up to the nova would also take place in the supernova. The primary difference would be in the size and the scale of the events. (See Nova:)
In the aftermath of the supernova, the C-R theory would predict the release of a very sharp burst of extremely energetic, positively charged particles. We would also expect a momentary increase in trapped neutrinos being freed. This neutrino burst would be released to coincide with the moment that the gravitational trap around the outer portion of the Neutral Zone collapsed.
Unfortunately, the initial observed differences predictable between the C-R theory and conventional theories would not be too obvious. A possibility exists that the initial surge of positive charges freed by the activation of the neutral zone should continue accelerating by their mutual repulsion. This will occur until a sufficient number of the positive charges meet up with enough of their long lost electron companions to allow friction, or attraction, rather than repulsion to predominate.
The C-R theory provides a very simple causative mechanism for the many, high energy cosmic rays coming from space. Due to the exclusive use of combined mutual positive repulsion, the C-R theory might predict that the energies achieved by the cosmic rays (i.e., accelerated protons) from a Black-Hole powered supernova source would exceed those energy levels available to accelerate protons due strictly to a fusion reaction.
Notice: The C-R theory does not forbid that any fusion occurs, or require that fusion plays no part in the nova or the supernova reactions. What the C-R theory predicts is that any fusion reaction in a supernova occurs as a side product, not as the root cause of the nova-supernova phenomenon.