Excellent video! This has the best illustration of timing the backswing off the bounce that I've seen. IMO, the importance of this (a matter of heavy dispute here, as you know
) cannot be overemphasized. The various positions of the racquet and hand are shown with superb clarity, illustrating how lag happens, and how the racquet is pulled. Some details regarding arm and wrist action after the forward swing starts are not discussed, but we've discussed them ad infinitum and should be able to recognize them in the video.
Thanks for posting this, Cheetah.