I would release Cora and bring back Roger. Off-hand, I still think Bixler might be better than Roger, although that's because I can see Brett Gardner in him. Hard-working jack-rabbit. If only Bixler used a shorter or lighter bat, and went for contact always. Nellie Fix with speed. Roger seems to have a longer swing, maybe some power, or at least electricity in his swing. He just misses too much (hitting about .235-.240 last I looked at Syracuse). Acrobatic fielder who doesn't position well.
Cora has no more value. Hairston, yes, he could contribute, but not Cora anymore.