you agreed to let claw wood rape, and when he did it, you got mad. it's that simple. don't agree to something and then get mad over it, even if it is in your view distasteful.
I am also aware that no wood rape is a very old tradition. So I understand where you're coming from.
But why quit over a lost series that was won in your opinion in an underhanded fashion? But remember that it's your opinion.
Many players disagree with rules in custom maps as well. And it was clear that claw was one of them.