It is back again at 2:10:47, demanding 1400 fpm climb. Stall warning goes off, nose is abruptly pitched up. Flight director is now firmly below aeroplane symbol, yet the pitch goes up and up and up.
(bolding mine)
Clandestino,
Using the plots from page 60, 61, & 62......
the pitch attitude is 6 degrees at 2:10:48 and transitions to 11-12 degrees (with 2 very short duration plateaus evident, one at 11 degrees, one at 12) at 2:10:57
this is a pitch increase of 6 degrees in 9 seconds....2/3 of a degree per second. I don't consider this as "nose is abruptly pitched up". It is, however, entirely consistent with use of the FD as airspeed bleeds off.
Using the PFD representations from page 96 (Fig. 69), at 2:10:48 and 2:11:05, they show the pitch steering command within 1 to 2 degrees of pitch attitude, presumably for the entire 7 seconds and maybe longer (next PFD representation is at 2:11:39).
I'm unable to see this as "Flight director is now firmly below aeroplane symbol"
From this point as the airspeed decays more rapidly, yes, the nose goes up, up, up...as does, if you notice, the FD pitch steering command (PFD picture at 2:11:39).
Whole sequence is entirely consistent with attempted use of the FD initiated at 2:10:47....(or it probably wouldn't be included as a possibility in the report).
edit: BTW the PFD picture with the FD well below pitch attitude is from 2:10:27, well before that very critical moment at 2:10:47 when pitching direction is reversed.