This is NOT about Vince swallowing his pride...John Morrison chose to let his hurt feelings interfere with ideas for a freaking Wrestlemania angle. Trish theoretically would still be around, but Morrison vetoed any ideas about continuing the storyarc. As an employee, you have to do what's best for business.
Now...is R truth the right guy? Eh...I think he's worthless, personally.
Odds are that Cena will pin R Truth to win the title so that Miz can claim that he never lost. (or Miz will pin Truth, so Cena loses but is protected).