zak123 - Your hypothetical question is loaded. Why will the buck die ? Why are you carrying a bow with broadheads after the season closes ?

The is no moral / ethicals violation if you shoot the deer out of season. IMO if you hunt it and kill it its ethical. You WOULD be violating legalities and law though and would/should be punished accordingly if caught.

Legal doesn't always mean ethical

Would I shoot the buck ? No, I would not, I have no reason to other than for the horns and thats not good enough IMO. If I needed the meat I'd kill him (or any other deer) in a heartbeat laws or no laws. I cannot imagine that scenario actually becoming reality (like the one you posted) but if it did, I would.