[12 piece bucket]

Thanks OB. That's a lot you gave me there.

Re the inert left arm, would intentional supination or ccw rotation of the left forearm/wrist/hand and external rotation of the left upper arm to release the club via pa3 during the down stroke in "violation" or not in accordance or inconsistent with the rule of the inert left arm and law of the flail?

no...you can actuate the accumulators "manually"...it's up to the golfer....automatic vs. non-automatic release types....