MTU 8V 396 diesel engine catastrophic failure

This is a MTU 8V 396 diesel engine blowing up. This video was shown during a rebuild class I just took. Not really sure what happened. My guess would be that it spun a bearing, causing a piston to try and sieze, in turn throwing a rod. Pay attention at 24 seconds to the engine torquing hard to the left and the terrible sound it makes until it lets go...