I think the antitrust exemption would allow for MLB to get the owner it wants, but that fiduciary duty is going to be a hell of a sticking point. I don't know if other teams have been sold under these circumstances before, but I'm willing to guess the antitrust exemption would not prevent MLB from getting slapped with a potentially successful lawsuit for interfering with that duty. As the article mentions, this is an unusual situation. I'd have to look into it more, though.