I thought he was going to carom off the ball, but with inside spin and go two rails to get to the same spot. Especially since he looked to be cueing down on the CB. It was hard to tell how full he was going to hit the carom ball.
Actually, I have some trouble with this type of shot shooting it myself, and estimating how thick I will hit the carom ball. Maybe I should practice it? ha ha
*Edit, watching the shot again, do you guys think he cued down on the CB with only center draw? The CB didn't look like it had much if any spin the way it came off the rail. When I first saw the execution of the shot, I thought it was hit with outside.