Well, you can put nail polish remover in the hair and it will loosen the glue, but will damage the hair. Maybe you should call a groomer and see if they can do anything, if not sometimes oilbased products will do the trick! If you decide to do this, put the oil right on the glue and leave in cover it and then heat it with a blow dryer. pick at it (the oil should have loosened it) then shampoo and conditioner with MOISTERIZING shampoo and conditioner!! Hope I helped some. Tell him to feel better. God that sounds really uncomfortabke!!! POOR THING!!