On May 14, 8:12 am, James Robinson wrote:

There was a theory on one of the other pilot forums that the captain
might have done all of his stall training when the aircraft was under
manual control, untrimmed, with the throttles cut until the speed dropped
below stall speed. He might have gotten used to having some backpressure
on the control column to avoid altitude loss under those conditions.

He might never have experienced stall training where the AP had ratcheted
the pitch trim toward its maximum, and was caught by surprise with the
sudden pitch up when the AP kicked off.

The FDR shows his immediate reaction to the stick shaker was to apply 20
lbs backpressure, which he immediately let go of as the aircraft pitched
up. He never pushed on the control column, however the wild
left/right/left/right rolls pretty well made controlling pitch a moot
point.

Those rolls were made harder to get out of by the fact that the
captain let
the aircraft get all the way down to 80 kts at one point, and at such
low
airspeeds, the ailerons have much less effect, which he would have
known
if he had simply paid attention to his flight instructor.