Actually the A300 I think more or less pancaked in in a flat spin after the tail seperated and the engines detached, though there is no flight data after the engines seperated (which was after the tail came off)
This smells like a loss of controll for me as well. I already said Spatial disorientation, and that's what I am going with till more data arives, but a climbing turn over a black hole can be trouble...
Even a 320 was lost about 4 years ago that way when the Gulf Air 320 smacked the water doing a lowlevel 360 to try and get back into a position to land, and that is an aicraft you CANT turn over on its back...
Cheers
Wino