**** it, I take back what I said. Ban him for life, three strikes and your out in my opinion. What excuse could possibly exonerate him now? No doubt a Scouser somewhere will be trying to justify it.
If you bit someone on the street like he has done, not once but three times, you'd be going to prison.
Now I like pesto as much as the next man, but you control yourself in public don't you. You can't just bite an Italian.