Julray, I am also not a hitting instructor but many people say that you have to be careful watching slow motion video like the swing clip. The question that you have to ask yourself is..... Is his body moving in that manner because that is where his focus is...... or ..... Is his body moving that way because it is supporting what the hands are trying to accomplish?
That could very well be, I won't argue with you on that. But based on the GIF.. how do we know if this hitter is trying to turn the barrel with his hands or is that happening because of some other body movement? Does most MLB players think turn the barrel with their hands and the body will follow? Is this how they train? Based on this GIF, I am not seeing the violent turn of the barrel with the hands. Just my observation..
Cheers