Biting is not nice, not fun at all.

Can I ask how long he has been biting. I had several episodes of biting (though not as bad as what you are going through) and all of them were temporary and only lasted a few days to a week. If he has been doing if for 24-48 hours I would say that another day or 2 MIGHT see the end of it, but if he has been doing it for 2 weeks I would be less inclined to think waiting it out might be the answer.

Good luck...x