gotta love that emergency shutdown, or he would have been a fireball on the 2nd impact./
It's actually designed to do just that. Upon impact, the engine doesn't suck fuel from the airframe due to it no longer spinning. In this case there was no need for the pilot to initiate an emergency shut down. The engines were already off at impact.
Edit: I've done a few Apache crash investigations in my 20 + years of T700 Engine Series So far, they've all walked away. Pretty survivable aircraft. If I recall, the seats stroke at a +9 G impact, providing the AC a "cushion" upon impact.