Looks like the most rearward LP turbine disc has come away and cut 360 degrees through the exhaust case, cutting the engine in 2, with the LPT bearing housing and jet pipe falling away. I'm not that familiar with the CF-6, but does the rear engine mount fit to the exhaust case?
If so the remains of the engine could have been hanging on the forward mount only!
I'd love to see some pictures of the remains of the engine on wing! Nasty failure, and glad to see that the aircraft landed OK.
RBT