I seriously doubt that. Mitt must be looking over his shoulder at the two candidates that he and his PAC has spent $40 Million maligning -- worried that they form an alliance going into the convention.
Conventional GOP "wisdom" ala Clinton pal Dick Morris yesterday on Hannity is --- Sanatorum scared all the GOP women moderates into Obama's arms and that Mitt has wooed them back and is now their "savior"; that Rick will lose all the upcoming elections [inc PA] and that he must drop out before his loss in PA to look gracious and to remain relevant in the party. Isn't that special?
Plus this: There are lots of people betting on, including me, that Santorum won't be able to withstand the continuing and escalating GOP establishment push via endorsements, backrooms, gop-affiliated entities endorsing romney... That it is quite possible rick will fold and take a promise that he will have a kingmaker place in the party if he does "the right thing" and next time will be his turn... this is what I am watching for...
A lot of people are. I also have no doubt that the Romney camp is behind a lot of rumors about both Santorum and Gingrich - hard to know who's spinning what or how they plan to play their cards.