O'Leary predicted his problems back in '14, mentioning he does what he likes to call a "Tommy John twist", which is a rotation of the wrist that some pitchers employ that (according to his research and opinion) heavily correlates with TJS. David Price used to not do this, but now does it by the way.
O'Leary is extremely knowledgeable, but he's such a massive, self-important, know-it-all douche, that he turns people off from what may be game-changing knowledge regarding baseball biomechanics. He constantly thrashes teams and coaching staffs. That's no way to make friends in the business.