The only thing that looks certain, from Inzil's posts, is that Sally is innocent. That's... helpful.
I would also propose that Inzil was trying to buddy up with Pitch, early in Day Two. I get the feeling from this interaction that Pitch is innocent. Add to that list Coppermirror and G55, due to their votes for Nessa, and my guess for third wolf is the one left over:
Shasta.