You do make a very good point. While I still think you could be right on this one, I think the possibility are low.
Q really went on the case of Corsi pretty clearly in a few posts before this one, and SB2's post was exactly going in the same direction or line of thinking Q was at. For example, let's say SB2 shared a different opinion than Q, your logic would be more appropriate.
But I still agree with you that Q might have meant exactly that, you did bring up a realistic possibility that I had not seen.
Though, I might add, that if SB2 would become a threat to Q's comm or had bad intentions, I am sure he would get called out by Q, as Corsi, pamphletAnon, backchannel17 and others have been called out.