Read 10-20....the Release Triggers. It relates to the actuation question.
Ive heard that Homer was quite excited when he happened upon the Triggers. If memory serves it was one his last discoveries and something he was particularly intrigued with. He left open the possibility of x classifications or as yet un defined triggers. He was, I believe "on the look out" for them.
If you get past more than a few lessons with Lynn Blake you'll get a taste of what they're like and a demonstration. The vertical hammering video is I believe a Non Automatic version of a 10-20-E (left) WRIST THROW.
Now with Extensor Action and given the Magic of the Right Forearm is it really the right elbow that is actuating the #2 Angle, uncocking? I dunno. Lynn said it was "called a throw and it is a throw". So maybe that all it is. The non auto version being pure CF throwout, law of the flail type stuff.
This is really interesting stuff, where the rubber meets the road in a persons swing. Hogans three right hands for instance. The top and the aft of the shaft, dragging vs driving , one or the other, one before the other , but not both at the same time etc .
Most teachers Id say teach one Trigger. Either out of preference or ignorance to be frank. Not Lynn Blake, he knows ' em all, intimately.
I heard a teacher recently a former A.I. who is a little "out there".......say that Tiger was an Arm Swinger and that ARm Swingers shouldnt get lessons from teachers who tend towards Body Swinging (CF) he mentioned Hank as being one. I dont know how he defines those terms but Hank taught a non auto, (active) throwing of the Right Hand, active right hand uncocking. Now there's a Trigger that Homer would not have subscribed to. You cant uncock something that shouldnt cock in the first place. Which is probably something Tiger is giving some thought to right now I'd imagine. An actuator change.