I don't know that this is true.
IF (and this is not certain) the sleeper agent has a collection of one-shots (this also does not make it certainly ValiliaRei, especially if the scum know all about their sleeper agent) then it's worth telling them to stop wasting shots now and to save them for the secret wincon to be revealed later. That's especially true if the one-shots could potentially interfere with scum kills.
The fact is, we just don't know. Without a screen on Val, even she can't know imo.
On the Saul Tigh thing, I don't think that there's a Saul Tigh in the game:
BRO fake-claimed Saul Tigh and was in fact D'Anna Biers, a model Three. We know this for sure because of the flip.
If there were a real Saul Tigh in the game, I think he would have counterclaimed.
If one of the missing people had been Saul Tigh, I think they would have said so in their own thread and we would have found it out today.
If Peacebringer were Saul Tigh, I think he would have told Toogeloo and we would have been told.
Please vote me for screening so we can get to lynching Ooba. I don't really care between me and Porochaz because I'm pretty confident he's town as well, so I won't squawk if you want to screen him either, but I would like the chance to clear myself and end the passive-aggressive nonsense from Nikanor.
"Oh, you can't help that," said the Cat: "we're all mad here. I'm mad. You're mad."
"How do you know I'm mad?" said Alice.
"You must be," said the Cat, "or you wouldn't have come here."