I found out by playing with the fall off zones on the ghost thighs in my dresses I can get them to work through about the normal range, the pic on the left shows the V3 default crouch. Go too far and it does start to deform, though, per the middle pic. The problem is the overlap of the two bend zones, of course, if you set them properly for non-symetrical bends you get this, if you set them for equal bends in the legs they don't work right for non-equal ones. My answer to this was have a separate ghost joint for when you need to go past the normal range, like to a sitting pose. The idea is to back off the conforming parts and apply it manually, or have a Pose to do the same thing.