I agree that the back scap pinches toward the spine as the hands load back and up. However, I would never instruct a hitter to literally load the back scap. I prefer the educated hands approach. IOW, IMO the body has a natural tendency to support what the hands need to do. So, when the hands are loaded back and up during the stride, the back elbow naturally elevates or pokes, and the back scap pinches. The advantage of using the cue "turn the front shoulder down and in", is that it prevents a hitter from counter rotating the upper body in a horizontal plane. Plus it's just a fact that in the high level swing, the front shoulder turns down and in as the hands are loaded back and up to their handset position.
What has helped me to understand how the shoulders, elbows, arms and hands work in the high level swing, is to think in terms of, "whatever loads, must unload". I prefer hips and hands.
What has helped me to understand how the shoulders, elbows, arms and hands work in the high level swing, is to think in terms of, "whatever loads, must unload". I prefer hips and hands.