Still think Bo takes the chin-whizzer off when MyMar goes from the blast-double to focus on the single-leg (drawing it up and toward himself), Bo acts like he was thinking about dropping that arm inside of MyMar's arms as a defense tactic had MyMar been satisfied to focus on the leg, but when MyMar then continued to drive forward, you see Bo realize he is going to the mat so he drops his hips in preparation and immediately inserts his lower-leg and foot into the "elevator position" as he is going down....at the same time and as he is going backward he starts searching for MyMar's head-&-chin as he expects it to be coming forward....which is delayed momentarily as they hit the mat.....but MyMar foolishly comes forward after hitting the mat (originally, MyMar's shoulders hit down around Bo's stomach and waist....it wasn't until MyMar foolishly drove forward looking to drive Bo's shoulders down, that Bo was able to re-engage his head with his foot-leg still in the elevator position....game over).