[Yoda]

With a Stationary Pivot, Basic Motion, Back and Forth and Zero #3 Accumulator, the Clubface is Opening and Closing to the Plane Line. That's Left Arm Primary Lever for sure, but its guided and regulated by the "Straightening of the Right Arm with its Paddlewheel Action". No?

Absolutely.

And that, the visual 'opening and closing' of the Clubface and the in-line Travel of the Left Arm and Club (Primary Lever), is the result of maintaining the Vertical Left Wrist through the Impact Interval. This is the required Overtaking -- albeit without the Maximum Power or Maximum Trigger Delay present when the Club is Gripped under the Heel of the Left Hand (a normal #3 Accumulator Left Hand-Clubshaft Angle) -- of the Hands by the Club, even with a Zeroed #3 Accumulator (Angle).

The Hands and the Clubhead are, after all, moving in concentric circles, and the Clubhead, with or without any #3 Angle, simply must move from one side to the other and always outside the arc of the Hands.