(OOC) Deezer: Okay! I will give him a warning!
What about this?
(OOC) Smallville: Deezer, DethStrom broke RDM, can you TP to me and bring him, so we can have a conversation to try and fix this?
(OOC) Yeah sure, hold on!
Deezer: Okay guys, what happened? Smallville start with your side.
That's how you're supposed to deal with it, you listen to both sides, hear what happens, and even if you gave a warning for RDM after that, it's smart to keep going, usually they have more rule breaking.