Mafia: general discussions.

I could just as easily claim that Archik's outburst was perfectly valid and in line with the rules, and what would you say to that? He didn't reveal himself, he didn't disclose his role. There haven't been any similar punishable precedents before.
When a Mafia player says during a vote, "town, I'm innocent!!! you'll make a huge mistake if you vote me out" (and you wouldn't demand proof for that, would you?), would you accuse him of revealing his role? It's the same situation, but Archik was at least thoroughly investigated. Or is only lying allowed? And if he tells the truth, is he immediately "modkilled" because it makes the game easier for the town?