Speculation
I read these comments with some interest but having been with a GAPAN group to the UK Air Accident Investigation Branch unit I know the enormous detail they go into to determine the real cause or causes and especially the chain of events leading to impact. Most, as has often been stated, are a sequence of events and rarely one factor that cause an accident. The comments on this forum have only scratched the surface but for sure the aircraft appears to have been in a stalled mode with tail down and nose up at first impact or to put it another way insufficient air speed close to the ground coupled to insufficient height to recover before hitting the ground.
One thing does surprise me. Why did the flight deck all succumb when they would have had full harness and more warning of the pending accident than anybody else? The cockpit area seems relatively undamaged.