GOPe didn't spring it, the Enquirer did. The GOPe isn't as powerful as some Freepers think it is. Once you plant a rumor there's no telling when it will break out, or if it ever will.
Enquirer was the vehicle to spread the story but not the source. Breitbart is on record noting Trump team was not shopping the story but rather the Rubio camp. And that lapdod does noting without his master's approval