Operators are assisting the ATSB to throughly investigate the casue of the engine failure,it seems that given the extensive damage to the engine and that it's condition hasnt been destroyed by any further misfortune that it may hold some valueable information for safety.
Dont hesitate with an engine failure,do your checks,shut it down if needed,stay calm,and get that prop feathered immediately.
Never assume that you will know when its about to happen and always keep current on your emergency checks,its the best insurance you will ever have.