PJ2
You are quite right, most serious professionals ceased contributions to his thread some time ago. I despair of the constant theorising and the rehashing of poorly understood aircraft aerodynamics. Well done seven stroke roll and others for sticking with it.
Way, way back it was clearly suggested that this was an attempted takeoff without slat and/or flap, all the evidence points to that. The task now is to identify the critical path of events which resulted in the accident and find a way to prevent a recurrence. There has obviously been a worldwide failure to do that so far.