Could have been a big score buck that you patterned all archery season with no kill shot. Only to have him under your stand before first legal light He walks away about 50 yrds and BOOM! I know how you feel and wish all hunters were ethical. The bright side besides no one getting hurt is that your son learned a valuable lesson about why you should follow the rules. all be it at the cost of his first bird. I would call this father and let him know your concerns in private. And hope that he would understand! If not then bring it up with the club. If they keep him you don't want to be a part of that club anyway!!