Alright, here's what happened. You can thank your friendly neighbourhood internet detective Rowen for tracing the IPs of the posts and figuring all of this out.
One of the guys at Surface left his browser tabs open and logged in, and one of this guy's friends was using his computer. He thought it would be a funny joke to tell the internet the Jeff was dead. When it blew up and everyone was PMing and emailing, the guy lied and said he had nothing to do with it. Once Rowen tracked down the IP address though, they confronted him and he admitted it. So it wasn't Surface's fault!