Yes, I'm most surprised that the engine control positions haven't been mentioned yet. I'm of the understanding that this information is of primary importance in incidents where there's no obvious, gross mechanical failure, even more so in the case where there's no flight data recorder, and one - if not the - first thing to be noted when the investigators get access.
Also, I'd appreciate some informed info on the basic physics. If the rotors had stopped by the time the helicopter impacted, then what had happened to their rotational energy such that the helicopter itself wasn't rotating? Is there anything other than a managed reduction in speed that could do this?