The dude shot the deer and found it the next day. If he doesn't tag it, I would bet he's violating a game law in pretty much every state. Even the guys coming to his defense about "spoiled" deer" are in jurisdictions where you have to tag it, and then apply to the warden for a replacement tag. Maybe "poacher" isn't exactly the right word, but, I'm not sure what you call it when someone doesn't tag his deer.