I can't remember exactly, but wasn't Nog hurt or sick going into that fight? Unless I'm thinking of someone else I swear he was just getting over staff infection before his fight, so if that's the case we definitely can't start calling Nog washed up.
Its been mentioned a couple of times by other sources (including Dana White, I believe), but never confirmed by the fighter. But Nog seems like the type to refuse to make excuses. Did hear he was in hospital just a few weeks before the right, but who knows? The next fight should go a long way to showing where Nog really is at this point...