You're welcome to speak to another admin, or Ralle if you like. But, first, let's review your post:
"Whatever works.. it's a solution.
Next time, I won't bother trying to help.
Wait until your thread is dead with no replies, then you'll come asking for my medieval tactics."
You were inciting the user to respond negatively. It wasn't necessary, and it was baiting the user into responding. It's neg-rep. It's a warning, and that's it. If you honestly believe that's abusing it, then post in AC.
Edit: Forgot to mention that you talked about "LP", and Masturbation. It doesn't matter if you warned users, it's prohibited from the rules.