BOAC
"had to drop". IF the PF had been trying to arrest the climb, (BEA have not located the NOSE Down inputs, time wise), He would have arrived at a ND a) eventually, b), in spite of elevator authority (due loss of energy), or c) STALL.
I think it extremely unlikely the a/c remained Nose up through the ordeal of the climb without it dropping @ "AoA decreased to 6, and STALL WARN." Yes?
ChristiaanJ sorry, I'll leave. Had a stroke last year. Memory and other things are a bit different.