Found this through my previous clan and on reddit this morning.
Apparently assaulting a player during a Jagex sponsored event (Runefest) can get you banned on the game; Based on their ToS.
'Success' aka 'Bizzarely' assaulted another 5.2b xp player (almostlost) at a bar, where Jmods happened to be sitting in.
https://www.reddit.com/r/runescape/c..._success_gone/