Jeff Neumann has a way of walking into a tourney and blowing up an EM. I remember at PPE a few years ago he blew up a Klondike. Don't remember the score, but he more then doubled the current high score. He methodically took the game apart. Never. I repeat, NEVER take Jeff Neumann to an EM if you have game choice.
Besides being an excellent player, he's a real nice guy. I hear he's thinking about moving to the Seattle area. Not sure if it's relatives or just all the tourneys up there tempting him. Maybe a little of both.
If I'm about to roll an EM (at a tourney), I don't look around for an official. I just start blurting out 'I'm about to roll this game'. Somebody always notices and confirms. One witness is all you need. Besides, it's really the only time were it's perfectly acceptable to let everyone around you know that you're crushing a game. You're killing it, let the world know.