I was thinking that at this stage our best hope was for Romney to unify the GOP by bringing in Santorum. This way Santorum could help keep Romney pointed in right direction. Romney strong on financial issues, Santorum strong on social matters, I thought it could work.
I think Santorum just blew up that idea.
I think that was the idea. It wasn't enough that petrified GOPe dolts like Dole told him to get out, but the next day the grey suits completed the exacta by promoting Rubio as VP.
It's all in the script, but the latter bit of gamesmanship must have really yanked Santorum by the short hairs, because all things being equal, he had a historical argument for the first ask.