To relate to a different sport, Reggie Miller had about the ugliest jumper, no one wanted to change it because his shot went in more than not, and the shot gurus were worried correcting his form would ruin his shot. While there's not a lot to 'ruin' for Haarberg, he's set in his motion. This is stuff that should have been corrected in HS/Middle School, but I do wonder how much they threw the ball and had a coach who cared. As long as they won more than they lost, they didn't care about his mechanics.