Well, if questions are permitted from professional engineers, here are two dumb questions:-
1. Looking at the altitude plot in post 1869, the clearance from rising terrain at 02.40 is perilously small, but thereafter there is a brisk climb. Could that rate of climb and altitude gain have taken the aircraft into a stall?
2. Eyewitnesses claimed to have seen items falling from the plane whilst it was still airborne. Could these have been contrails/vortices generated by extreme AoAs?
Thank you in anticipation of patient and polite replies.