Another Inkling

How to absorb an opponent's force and use it against him? Maybe the key lies in drawing him beyond the force provided by the legs, such that he uses local muscular force (ie. the arms muscles) instead of moving his body as a whole. Maybe the key is to draw him in, and once he stops using the force from moving his body as a whole and relies on the local muscular force of his arms, that is the time to return his force?