Rubio should have understood that he'd never get Trumpster support and ripped Trump from the beginning. Trumpsters bag on him about B.S. gay foam parties. He seems more like the smart-ass guys I played football with in High School. Glad he was in. Wish he would quit and let Cruz trample Trump.
I too would like to see Rubio out, but don't think it would play out as you wish.
The only way for Cruz to win is by following Romney's process manipulation he outlined today. Under that scenario Cruz with Romney's help could get the nomination. Unfortunately Hillary would win the general because Trump supporters will simply stay home having been disenfranchised by the republican elites.