Thought of that too spitfire. I wonder if the stab trim brake system prevented them from manually trimming up with the yoke that far back.
° The stabilizer is held in position by a dual brake system. Either stabilizer brake can maintain the position set by the trim system. In the event of a dual brake failure, and without pilot response, airloads can drive the stabilizer to its mechanical stops. Main electric trim can resist this motion, but control column opposition will make the condition worse.
A Control Column actuated Stabilizer Trim Cutout Switch stops operation of the main electric and
autopilot trim when the control column movement opposes trim direction.