First off: Landowner sets the rules.

Now lets look at this fromhis perspective. What might he be thinking?

Maybe he didn't really evenwant you there in the first place but was just "tolerating" you and being a nice guy.
After allwhy wouldsomeone buy landfor the sole purpose of lettingsomeone else hunt it?
Shooting the button buck might havegiven him a reason to finally do what he was thinking about doing anyway.
In making your "ethical choice" you clearly proved to him that you were capable of disregarding his wishes i.e. rules and had the potential of doing so again. In other words you lost his trust.

Nothing personal, justthrowing out a couple of ideas.

I understand andsort of agree with your choice of shooting the wounded animal but then I 'm not the man who owns the property.

"Posession is 9/10's of the law."
"Don't look a gift horse in the mouth."