Trump has been talking with the party bigs. Maybe he says OK, get off my back and I’ll raise my own general election money, so you can focus on keeping the House and Senate and helping downticket races. Why wouldn’t they go for it? Otherwise they get Cruz, who won’t deal with them at all, or they tear the party apart through trying to hijack the convention which will have BIG implications on the other R races.
If I had to guess I would think Trump is telling the party stalwarts that he is a rational guy and is not going to burn the house down. He is likely telling them that he wants to work with everybody, blah blah,blah. Let’s all kiss and make up and I’ll pick somebody you guys like for VP.