If Trump fails to get a majority of delegates before the convention... I don’t think that it will matter what the repercussions are. Neither Cruz or Trump will get the nomination. A vote for Cruz or Kasich is a vote to leave the establishment firmly in control. This is the narrative that Trump needs to pivot to.
I think that Cruz may play ball when his mathematical possibility of getting to a majority of delegates before the convention disappears completely. His conservative principles, his ability to argue, and his mind could do the most good in the Supreme Court.
Thanks for thoughtful reply :)