To prevent the 'exorcist effect', the body should start to rotate with the head after a threshold rotation (90 degrees left or right) has been hit. Probably it would look best with some easing function applied to it. Bear in mind that then the head rotation will have to be negatively offset with this body rotation (otherwise it will have rotated too far)
It might be cool to use an approach where the torso would rotate first (for the first say, 45 degrees after the 90 degree threshold) and only after that the lower body would rotate to stay in line. Many games do this. Hope I'm making sense.
To prevent the 'exorcist effect', the body should start to rotate with the head after a threshold rotation (90 degrees left or right) has been hit. Probably it would look best with some easing function applied to it. Bear in mind that then the head rotation will have to be negatively offset with this body rotation (otherwise it will have rotated too far)
It might be cool to use an approach where the torso would rotate first (for the first say, 45 degrees after the 90 degree threshold) and only after that the lower body would rotate to stay in line. Many games do this. Hope I'm making sense.