What-- but it would make more sense for it to be the other way around, wouldn't it? For them to be in some split-off one and us to be in the original? Unless that's just... some sort of holding pattern we're in for 'party' reasons.

Suppose being a replacement Satan would explain some things, though, yes. We already know our demons weren't really that demonic, I have to wonder if their boss is just using a name as well.