Here are a couple pictures to show you exactly what is going on, with my hand at and prior to release. I don't rotate my hand at the release from this position. The thumb releases and the fingers give the ball the rotation. Now I used to pull through the release and "Hit up" but I have minimized/eliminated that.
Now if there is something I need to do with my hand position, that is another story but I am certainly behind the ball, and my elbow is pointed down the lane. Only and I repeat Only when I try to hit the ball like in the past does my elbow every turn out.
The pictures from the video are just too blurry for you to see what exactly is going on with my hand, so you cannot judge strictly on the position of my wrist without clearly seeing the finger position.
Now if you are saying I need to wait for this position and stay behind the ball and then rotate at the last second, how is that DECREASING rev rate? Because I was turning the ball before and was told to stop doing it, now I am being told to turn it.