Eh, I think punishing people for activity outside of the chat is a bad precedent to set, technically following that train of thought would have all of us banned for roommmate-posting and saying gamer words here. If they're explicitly doing the whole "Pippa sent me here!" schtick then that's a different story, but this just reads like a tourist who doesn't really have much interest in either of them beyond trying too hard to be funny.
He's just a regular sped rather than a self-identified Harine, so Henya's mods can just ban him in their own time and no-one needs to give him a second thought.