Originally Posted by Lonewolf
Insofar as the wings being more or less level at impact, do you think (once the nose fell through) that sufficient control authority was restored to roll level using ailerons (roll rate limits considered)?
I think the situation was more basic than that: the aircraft hit the gorund going almost vertically down with hardly any forward speed. None of the flight controls would have been effective; it was a falling leaf. Quite possibly, if it had another couple of thousand feet under it, it would have wing-rocked again, ala AF447.
I think CaptAirProx has it right:
basically a spin entry that due to the delightful 747 it briefly headed 'towards' a spiral dive which then self corrected?