[6bmike]

Right elbow are never truly passive because of extensor action

Not Elbow but Right Triceps can never be totally "passive." Which moves the elbow, of course.

Extensor Action is a straightline pull on the left arm- it doesn't move the left arm but does provide support to the left wrist cock. On the downstroke thru PP3 it pulls in a straightline both the left arm and shaft. Its direction is always below the Plane. This effect on the clubshaft can also be used to flatten the left wrist in line with the shaft on the take-away, too.