[He's been mentioning it to some people in talking him down, so he's torn. He doesn't want to betray his trust any further. But the fact is, if Rassilon keeps under this illusion it'll do more damage than good. He has hurt people.

He has to stop hurting people. He has to stop threatening to kill them!]

Between you and I, it's Rassilon. He's under the impression that Omega has assured him he needn't graduate or be redeemed. He'll be whisked away once he has a Gallifrey again.

I'm hoping very sincerely that it's in his head. But then again, that might make it even more difficult to convince him otherwise.