[12 piece bucket]

In my opinion, I'd word the above thoughts as follows (just a different way to look at it):

Regardless of plane, (inclined -steep, flat - , horizontal plane - Yoda practice) the uncocking of the flat left wrist is a Perpendicular Motion (2-P). That and only that. The uncocking of the left wrist is Lever Extension only (2-P).
Per 6-B-2-0 2nd Power accum (wristcock) "Cetrifugal force (is) available to acutate this assembly (the uncocking of the wrist - perpendicular motion).
When talking of of the wrist uncocking, no need to associate OUT. Centrifugal force is the Throw out. Centrifugal force or throw out is already in operation, as per reference above, cetrifugal force is available to accutate the uncocking of the wrist for velocity power.

Is the appearance of the uncocking down and out as a result of an inclined plane? Yes. SHOULD EFFORT be made to "make" specifically the uncocking down and out? No. The only thought should be of a Perpendicular Motion, as per 2-P.

Control direction (of throwout) via # 3 pressure point in right hand.

I think you are correct. However, I think throw out must happen on-plane . . . so it is On-Plane Throw Out. Throw Out can certainly be given over to CF for sure. But I think that many (me included) neglect to understand that the #3 Accumulator Roll/Swivel prior to Low Point is an OUTWARD motion. One of the most difficult things to learn is to Roll and Swivel while maintaining a relationship to straight Plane Line. I'm not sure that you can just turn that over to CF at least in the steeper learning curve portion of a G.O.L.F.er's life. If you Roll and Swivel underplane you just executed the #1 Snare . . . Steering. Uncock (extend the lever) down and out on plane to the plane line . . . roll out on plane to low point.

Another misconception that I think I'm starting to hatch in the incubator is that deemed #2 is the Velocity Accumulator . . . NOT because the uncocking happens fast. But because the Uncocking is simply an extension of the radius . . . and since the clubhead is at the end of the radius it speed is increased geometrically as a result of being further from the axis of rotation. So it is simply lever extension . . . not necessarily any great effort or need to happen "fast". As a result of the extension (fleeing from center) the clubhead's speed increases. But also as a result of the extension and the law of conservation of angular momentum, the angular velocity of the entire system slows down because the radius is extended. So you can't make it speed up around the CIRCLE but you will get speed as a result of the extension of the lever assembly with the clubhead being farther from the center of rotation.

So basically don't try to speed it up around the circle . . . you can't. Just extend the lever assembly DOWNPLANE and as a result the clubhead has to go faster. But the entire unit moves around the circle SLOWER in compliance with law. Angular Momentum = Mass X Angular Velocity X Radius . . . Radius is bigger . . . mass is constant . . . so Angular Velocity MUST go down inorder to conserve momentum. But the Tangential Velocity (linear velocity) is increasing because the point of the radius is farther from the center of the circle.