Shooting game out to a dog will make most dogs looser at the tree. If this is happening I would tie the dog back before shooting any game out to him.
I would sure enough find out if there is coon in the tree before I would do anything.If there isn't anything in the tree I would try to correct him slick treeing.
I would not breed your female until you figure this dog out, there are too many real good stud dogs to breed to, rather than breeding to this dog and possibly passing on some very bad traits.
Just my 2 cents
