It makes it much harder, perhaps impossible, for Romney to begin to tack back to the center to appeal to the centrist voters, an absolute necessity for the fall campaign after the free-range extremism of the Republican primary. Every time Romney makes a move, or even a head-fake, it becomes an Etch-a-Sketch moment.
Now, because it’s been said out loud, everyone will be expecting the inevitable flip-flop, and will call it out the second it happens. By calling attention to it, Mitt can’t do it anymore without looking like an idiot. Bro will have to bite the bullet to go moderate. He should fire that adviser, stat.