hey Mr Delimit,
I am aware of the visual effect you are are talking about i.e. the a/c attitude in turns appears to be different depending on the direction of turn, this is discussed during basic training here in the UK.
However I disagree however that this is because the "dopey" student is pulling up in a left turn.
The effect is still evident where it can be clearly seen that the student is not making a correction, and I have observed the nose pitching up in a left turn whilst instrument flying with students which would tend to agree with this theory.
this type of question always amuses me, cos there are many things in helicopter aviation that I know to be true, but someone will always say they are completely wrong, which can be confusing for a newbie observing the discussion, for example in a conventional helicopter, I know that if you lower the collective in the cruise without cyclic input that the nose will drop and the airspeed will increase and the altitude decrease, but I have met people who absolutely deny that this happens !.
regards
CF