Almost any nominee who get close to clinching will get extra support on the next ballot and get the nomination - except Trump. He has so alienated supporters of every other candidate and the party machinery, I have a hard time seeing him finding another 100+ delegates who were not already pledged.
Oh please the only ones who are opposing Trump now are GOPe globalists, Foreigners who like to rape us and people who are either deluded or slow learners.
Established GOP State party officer delegates are NeverTrump, they are not Cruz supporters no matter what they told you. That’s real world.