I checked my silver leaderboard and maezun is still listed in first place as well, and on at least Creature(by a margin of roughly the #5 score).
Is it possible that scores posted by people with this bug actually go to the correct leaderboards, and just don't show up correctly locally since it's showing bronze? Hopefully they can get it sorted soon, seems to be a fairly recent issue.
I got a reply from farsight saying they put me back in the gold leaderboards, however when i start up tournament it still shows me in the bronze ( im even ranked number 1 on bronze atm but my name is just a blank spot ), If someone on the gold leaderboards could confirm i have scores posted on every table then your theory would be correct ( as i only posted scores on creature and monster bash prior to being dropped into bronze ).