He won't necessarily implode, but his momentum will be severely stunted, possibly mortally.
I checked "yes", but this is what I really believe. Rubio is now the QB with a golden arm who can't read defenses. He's the new stud lefty power hitter who can't hit lefty pitching and has trouble with breaking pitches. The Donor Class was about to be sold on him; now, they're going to reevaluate whether or not he can really take this thing all the way. Christopher Ruddy wrote an article for Newsmax entitled "Jeb Bush Deserves a Second Look", and he may get one, courtesy of Rubio's poor performance.