There it is in a nutshell. You've set the yaw trim (pedal displacement) to compensate for the torque, when you remove the torque you have to retrim the pedals or you will get a considerable left yaw. In a power off configuration the aircraft will actually require some right trim (from neutral) as the fuselage will have a tendency to rotate in the direction of rotation due to the friction reaction by the main gearbox.
That makes sense but what about in the case of a stuck right pedal procedure?Assuming a shallow low approach, before touchdown we roll on to turn to the right (because of torque reaction) but when we roll off our nose will not only straighten but turn to the left. I understand that in an auto at altitude we have our vertical and horizontal stabilizers and transmission drag to cause a need for some right pedal but in the mini flare or a stuck pedal with only 5 or ten knots we still get a left nose yaw when coming off the power? What would cause that left yaw?