Any pilot used to hand flying would then instinctively wind in back trim to lighten the control load. As Tomaski said above, why they did not do this is a germane point.
How many revs of the trim wheel to ' wind in " say 2 degrees AND in say 5 seconds? AT 200 kts?
Previous threads and comments seem to say perhaps 50 turns-while at negative G assuminy you can reach handle, and apply enough torque
Of course, realizing that system was fubar, you had switched off all electric to kill a system you didn't know existed, and that HAL would repeat forever, or until you were vertically/ parked.
