The problem is that while GOPe is trying so hard to convince everyone of their narrative they don't grock the real narrative - that GOPe is dead. No Trump and they are going to be sitting with a democratic president, house, sentate and town dog catcher. A lot of Trump supporters won't sit home. They will go to the polls and they will vote whatever it takes to destroy GOPe. It could be third party for President, e.g. Trump if he is there or Bernie if Trump isn't. And it will be straight D's under that. They can put who they want at this point Cruz Jeb Romney Ryan. It doesn't matter.
It's Trump or Notrump. GOP delenda est.