IMHO:
The solution is simple and doesn't require banning anyone.
If RS starts a thread that is nonsense, ignore it.
If RS tries to hijack a thread, ignore it. Just keep posting as though he is not there.
If he insults you, ignore him.
Each time someone argues with him, calls him a name, etc., that just feeds his attitude. He knows how to push your buttons. If you don't like it, just ignore his posts like they are not there.
I myself debate with him (and others) up to a point. After a certain level of debate, it is time to quit. Excuse my language, but there is no reason to continue a debate after it becomes a "pissing contest." No one wins that.
If you feed an attention-getter, he/she will grow and his demands will increase. If you starve an attention-getter, he/she will either shrivel up, change his/her ways, or implode.
Whining to mods is not the solution.