FiveFrameSwing
Banned
From the first tweet which I linked to:
"THAT.....is a rear leg snap. Nice. Coil resists the forward move. S t r e t c h.....SNAP!!
Snap isn't the teach, the stuff quoted is what he is saying creates the snap in the rear leg.
Sounds like this snap is a result of the overlapping of the torso/hip-engine and forearm/hand-engine ... some may have referred to it as a gear-like action.