Yeah, Reuben, that wrist-whip thing was one of the first things I noticed in Aikido. My first sensei would often 'hold' his uke in an almost thrown position while instructing the class on ukemi, or on a point of the technique, then 'release' him that way---even did it to me once, at around day 8 of my training (my fall was not quite as pretty as his usual uke
). A couple of my larger friends like to hang onto me during their falls, and I'm always warning them to let go of me or I'll make them let go (I figure a couple of held-onto falls tests my balance, after that it's just risking my back)...they laugh, I do it, we both laugh, they stop...