I believe they don’t want any sign of shenanigans. In fact, I bet that if he is within 50 votes of the 1237, the GOP will actually rig it FOR Trump, and hand him the nomination.
A lot of pundits and nut jobs have said the GOP wants a contested convention, but I doubt it. It’s true that they have fought Trump tooth and nail, but they will not risk getting caught with the appearance of cheating.
The damage to their brand from angering 12 million enthusiastic supporters of the most beloved Republican candidate since Ronald Reagan would be irreparable.
Besides, they don’t think he’ll beat Clinton in November anyway, so what do they gain by blowing up the party?
He's the bright light this time around. Hillary is the dim bulb.