Biter

[Van]

I feel for you
you have to think what would you do if the biter was not your son but someone who was biting your son,.So shadow your son to protect the other children . it sounds as if it is a habit to him , a habit that needs to be broken . I would remove him from the group and let him learn it is not acceptable to bite !! He will cry but I think it is better to have him crying now than prolonging the problem, he will soon learn that when he bites it is not fun for him as the biter and stop.
Good luck