Wedge now has 2 confirmed townies to send reports to; Assume for now that he's town and put yourself in the mafia's Wedge, as a townie, would not risk sending his report to the mafia, so it will go to either Faris or Cid. That means the mafia can either get a 50% chance of stopping his report by taking out one of those two, or a 100% chance of stopping it by taking out Wedge himself.

Ergo, if Wedge is town, by lynching him we're freeing up the mafia to use their night kill to go after someone with a potentially more useful ability.

If he's mafia, a) he'll definitely be around tomorrow provided we don't waste a lynch; and b) either there will be no report or it will come from someone other than Faris or Cid. That would be something to go on.

I was right about the knave, and I'm right about this.