We're not getting to the theory that we die when we leave this ship, are we, because that's really unlikely.

[It's something of a joke. Or-- an attempt at one, anyways. If anyone would know that they're not dead, it's an angel that's been to Hell, right? (And Mitchell, too, though he's careful with that information.)]

If he's gone, then your problem's solved anyways, yeah? Might not have been a ghost at all, they tend to last a bit longer, I've heard.