Sorry Garrison, but you must add the pitch attitude to the AoA to get the descent angle.
Not on this planet. You have to add the pitch angle to the negative of the flight path angle to get the angle of attack (assuming that the flight path angle is negative for a descent).
With regard to the descent angle, the BEA report I am reading (27 May) says 15 to 16.2 degrees deck angle. At 35,000 feet, on the way back down, the angle of attack exceeds 40 degrees but during the 3+30 descent the angle of attack "remained greater than 35 degrees". Now, I suppose you could argue that "greater than 35" means 65, but the use of "exceeds" and "remained greater" strongly suggests that the AoA remained in that neighborhood -- that is, "greater than 35" means 36 or 37, not some much larger number.
I concede that the 107-knot groundspeed at impact is inconsistent with my calculation of 250 ktas, unless there is an improbably huge surface wind; but it is also inconsistent with the reported pitch angle and angle of attack. Maybe something changed in the final seconds; I don't have a good theory handy.