NL HU Tourneys...a question regarding ethics

[bcubed72]

Was playing rather small, trying to rebuild my bankroll after withdrawing most of it for tuition. In my adventures at $25NL, ran into a guy who tried to "tilt" players through abusive chat (I know, turn that $2/table/hr into $2.20/table/hr). He and I got into it.

I'm wondering...my greatest strength is HU/NL. Would it be ethical to track him down, deliberately abuse him until he steams, then dare him to play HU? I'd like to clean this guy's clock.