I can imagine PA#1 release contributing to drag loading the clubshaft if the actively straightening right arm contributed to the release of either PA#4 or #2 in a coordinated/complementary manner. However, how would that be possible? How can active PA#1 release at a certain point in the downswing produce a better left arm movement than the standard method of releasing PA#4 in a pivot-driven swing? Also, how can contributory active PA#1 release improve on the centrifugal release action of PA#2?
I not only cannot understand how a four barrel swing action can be better than a triple barrel swing action (4:2:3) -I also cannot understand how it can be even be equal (because active release of PA#1 can cause considerable interference/harm in a swinger's action).