Thoughts about the engine turbine intact.
Everythig at high rpms exposed to impact tend's to self destruct very fast.
Try to lift and drop running vacuum cleaner ( which is sort of a turbine ) and see the insides after. So looks like engine wasn't runnig at high rpms when pilot was trying to pull up ( full throttle ? ) . Strange ? Dont know how much time it takes to spin up , so maybe didnt , becouse there wasn't enough time.
That maybe another bullsh..
Sorry if it is