I wonder if Bard wants to move back to the bullpen. He won't say it out loud but he can't be pleased with his performances, and I believe he really does want to help the team.
He was great until he got injured. After the game he said he couldn't feel his leg. If he pitches 5th we wouldn't have much to lose and Bard would really make that bullpen works. Even if the FO signs Oswalt it would take him a while to be ready.