There is a rule against trolling.
I personally wouldn't ban anyone for just calling me a dick unless, it was like in a previous circumstance where, I warned someone about a violation and they said something like "fuck yourself" which I took as "I'll do whatever I want" so I thought a temp ban was acceptable.
I'm not like some mods though, really they can ban you for whatever even if it isn't right. Has to be taken up with admin at that point but, overall these types of things have almost virtually gone away lately.
If you really do have an issue with a mod, pm him and just wait for a response. No need for a thread cause it just escalates things and not in a good way since admin pretty much leaves us to our own judgment unless it's just foolish.
I'm sure that mod is just trolling you like you enjoy to do from time to time so, until you get popped play along. If I think it's unnecessary, I'll support you or whoever it is. I'm pretty unbiased.