Rod, the GOP leadership doesn’t even have to issue anything. Having been involved in local GOP politics in VA, the delegate selection process to go to the national convention is largely a reward to the GOPe types. They represent the GOPe by and large. They will do whatever is necessary to stop Trump, which is why Trump must win on the first ballot.
I think you are absolutely correct. If it doesn't happen and he doesn't get 1,237 first time around, I'm worried.