I don't think that shooting two game wardens, including one who wasn't even armed, then administering killing head shots with a .22 while both are laying wounded and helpless on the ground should be an acceptable course of action against GW's even if they are being heavy handed.
I read one of the biographies of Dallas and he was killing much more game than he needed to survive and was even giving meat away he had so much, according to some eyewitness accounts.