Uh...Santorum will direct his delegates to support a pro-homo, pro-abortion candidate? Are you sure about that?
Release them" at the convention is not the same as directing them. If Mittens has the magic number for the first ballot then either the delegates vote as aligned, or the RNC orchestrates a voice vote.
And Santorum's people are talking to Mitten's people if they are serious about wanting to retire Rick's campaign debt.