Vogel could not allow him to continue to "be what he is." I agree with that decision.
I'm a Tyler fan. Love his tenacity and energy. But he is no longer the best player on the floor, much less the best player in the country. He now has to learn how to play with discipline. Good shot selection, looking for the pass, etc.
If he can't pull it off, it will be too bad. But everything about this character tells me he will recover, learn his new role, and be a great player for us.