Re the evacuation, what strikes me most about the on-board video/audio is that - admittedly in the absence of pictures after the severe impact - the degree of audible panic among the passengers is much lower than I would have expected in the circumstances.
It will be interesting to find out in due course, perhaps, what the thumping noises were. Sounds as if someone near the camera was trying to fight past or through an obstruction. Was the fuselage breached even before the fire destroyed it?