Well, that's an interesting turn of events. PJ, even using the "not wanting to say Doc save because it would expose him to an almost certain night kill" line made it obvious you were claiming doc role. Honestly, I think you'd have done better to do a save reveal and make little of it, than to lie about it. (Assuming it is in fact true.) If there's another doc claim, then let's hear it, though it's pretty clear that there's not going to be a definite way to prove which is real. The only thing is, I don't really see a non-PJ doc saving PJ last night, so if there IS a counterclaim, you'd have to explain that, and explain it well.
So, if there's a real doc, you absolutely need to counterclaim so we know to kill PJ. Otherwise, ##VOTE Maniac. Going to try and look back for some cases against the rest of us, assuming PJ's innocence. If Maniac isn't the mutant, then we need to do some serious re-evaluating, even though I think he's a pretty likely mutant right now.