Doesn't look like a disk failure (in the still photo sequence). Looks like an interstage non-rotating part came loose and tangled with the blades. The tangling probably drove the part through the case letting some blades out along the way.
The engine compression system and turbines could have kept the engine running above idle, hence the sparks until shutdown.
Nothing out of the ordinary relative to the time frame for shutdown
back to the overhaul shop to look at assembly details etc.