"Menu -> Configure -> Game -> General -> Vehicle Freelook" should fix your problem.

edit - For the looking around with the right stick that is.

Adding an automatic option would pretty much fix this (especial when playing in a window). +1

Both could be solved the same way but, that one is more focused toward ways to use the scroll wheel while mine is specifically stance control. I appreciate your feedback though. The more ways to customize the input of controlling the game, the better in my opinion.

Would be a great feature in Arma 3. Perhaps they could use the speech recognition already imbedded in Windows so they wouldn't need to make any custom speech recognition.