Since posting I've been thinking of Mizuno Joe's tip on a bent right arm and what might cause the goat humping effect. and as you pointed out I think they are both related to lateral motion in the backswing.
when I push laterally back im forced to drive laterally forward in downswing to get back to the ball. this jump forward inhibits my ability to drive down the plan with my right shoulder and a bent right arm.
ill post a video in a week as I try to take some of that lateral motion out. hopefully sparing some farm animals.
thanks
There's an easy fix for this - on the BS, keeping the slant in your right leg, make your right hip pocket move straight back, effectively turning around your right heel, preventing the lateral shift off the ball. Now you feel "on the ball" with easy access to the inside of the ball, and you're ready to power through the ball with the right shoulder with confidence that you can reach it without right arm extension.