[thejeff]

But not once you've rolled back. You can only see who staled in the previous turn. Since the current turn hasn't run, you can't tell who staled when it did run.
(This is like time travel, the worst problem is the tenses.)

I'd say at this point, Caelum is the only one we know needs to submit a turn. If there is someone else who staled originally, they have until Caelum plays to either get their turn in or speak up. Once Caelum is in, force host it.