Was Joseph Gordon-Levitt an extra in "The Brothers Bloom"?

If it isn't him, I swear it's his twin or something lol. It's near the beginning of the movie and the main characters are in a bar and most of the people are dancing but the guy I'm almost positive is Joseph Gordon-Levitt is standing there. If it IS him, why did a solid B-lister (at the time) like him have to be an extra?