Give this a viewing ... it will explain a bit more about what he means about turning through the core and how he wants the body torquing motion led by the hips ahead of the shoulders. He is basically advocating eliminating back arm push and improving wrist flexibility & barrel direction. He also covers the pinching of the scaps as a means of helping eliminate pushing with the arms. He wants to deactivate the arms in favor of emphasizing the obliques and lower back. He advocates hip/shoulder spatial separation ... and wants to see a delay in the rotation of the shoulders towards contact once the dynamic stretch is felt by the rotation of the pelvis towards contact ... much like SnF ... and in fact he refers to it as exploding through ... much like SnF is the fastest way to deliver the ball from launch to contact.
As I have said on another website, I find his material to be very similar to Jack Mankin's.
I found the name on baseball fever.It was a short discussion 3 posts.I tried to give back/help posters who have help me and others.I just thought maybe it would help a dad have an aha moment.Maybe not?
I barely understand whats posted here.