It might be a negotiating ploy. The right to block a trade is a neat point of leverage for the player to get something extra from the buying team, or maybe even the selling team. After, if he wanted to stay here, all he had to do is agree to go to the Dodgers for two months, play in the playoffs, maybe win a ring, and then sign an extension with us in the offseason after opting out. But nooooo ...
One thing I know for sure: if he doesn't move in the next hour, it's going to be awful uncomfortable for everyone involved, him sticking around an organization that just tried to get rid of him.