[Yoda]

Yoda - I don't understand this statement.

"Once the Right Shoulder has Delivered the Power Package to Release, the Right Elbow must straighten, and the Left Arm and Club is driven by that action. Otherwise, nothing moves!"

Let me rephrase a bit and see if it helps:

"Once the Right Shoulder has Delivered the Power Package to Release, the Right Elbow must straighten. That motion permits the [Swinger's] Left Arm and Club to continue its centrifugally-driven journey into Impact. Otherwise, nothing moves!"

I like this second versio0n better because it differentiates action (actively doing work) from motion (passively permitting other things to occur).

For further clarification of Right Elbow participation Through the Ball (7-24), study 6-A-1 (the straightening Right Arm changing the shape of the Power Package Triangle); 7-20 (the lengthening Right Arm Triggering the Release); and 6-B-3-0 (Hand Motion "'Roll Power Control'" of the Right Elbow and "true Clubhead Overtaking Control").