Your dancing Tom.
Gonzo is like many others. As the elbow lowers it gets veritcal and maybe ever so slightly it leads.....but quickly changes.
Pujols does the same thing.
But, if I were you, I'd stay away from Yeager. He teaches to do this.....not to avoid it.
He's clearly wrong. Way out of line. No mlb hitter demonstrates what he talks about and shows on his DVD.
Epstein doesn't understand it either.
The radius of the swing has to change so that the point of rotation is between the hands. It never will if the elbow leads. The elbow becomes the fulcrum producing a long slow swing.