Calloway might be OK. It doesn't sound like he was there for the robbery/beat down. It sounds like he just used the guys Act card to buy something from a vending machine. If he knew it was a stolen card, then he is guilty of stealing a bag of chips I guess. If they just handed him the card while he was half asleep and said "Hey Honey Bear, get me some chips" then maybe he will be OK. It will be interesting to see how that part of it unfolds.
It is Calloway's second arrest. Arrested for pot in October. It looks to me like all four will be gone. I trust the administration and CNS to make the right decision.