Zabby - I'm sorry he's going through this, and you too. It's good that you got him to the vet right away.
Stasis is NOT an "if it's only stasis" situation. Stasis occurs after bloat and is much more severe. Chins go into stasis after their bloat hasn't been swiftly treated, which is not at all your fault. You saw he was ill, you took swift action. But he could have been building up to it and hiding the symptoms for a little while. Chins are oh so special that way.
Bringing him home is going to be a judgment call. If you feel you can administer subcu fluids and the other meds he will need via injection, that's the biggest part. You also have to get ahold of yourself. If you bring him home, he needs calm and assured, not hysterical and tearful. That isn't being judgemental. Animals have incredible radar and pick up on their humans emotions pretty quick. I know you're really, really worried about him, but if you bring him home, you need to be able to put a lot of that aside to focus on his care.
I always think if you can provide the medical care laid out by the vet, that chins do better at home. It's more calming for them to be in familiar surroundings. However, I would definitely not put him in with his cagemates. If you can separate one of them out, that would be one thing, but stasis is tremendously painful. If the three of them get to moving around at night, hopping and playing, he could get bounced on pretty hard and that's not going to help him. Maybe you could rotate one of the other boys out with him throughout the day and/or night. A different one each time, so they all stay "in touch" for when (we're going for when, not if) he gets to go home again. Keep everybody familiar to each other so there are no troubling reintroductions.
I don't know if you saw this link yet, but there is some really good info in it:
http://www.chins-n-hedgies.com/forums/showthread.php?t=6553&highlight=stasis.