Your headline is misleading and changes how people will interpret what happened.
Preach got his account suspended for cheating the rest of us by abusing an in-game item to give himself an advantage. His punishment gives him no access to WoW servers for its duration, and comes with whatever terms and conditions Blizzard wishes to set as "parole" or "probation" or however you want to think of it.
If Preach wanted to keep his access to the servers, including the PTR, then Preach shouldn't have cheated. Don't do the crime if you can't do the time. Well, Preach did the crime. Now they can STFU and do their time.