flailing a limb that is attached to an opponent can also throw them off balance
in addition to rustd's post, once you grab the body with the limb, use it to punch the opponent as much as possible.
Also don't forget that sometimes you can end a fight with just let loose of the other person body, if you're in a possition where you can get out but the other can't (and at the same time, can put you on a tougher position), then just let go of him.
Thorn