Although, to be fair, the sumo association did just expel 22 wrestlers over match-fixing in the lower divisions. None of the top sumo wrestlers and no foreigners, though. That's part of the reason that NHK did not broadcast this tournament and why they cancelled the March tournament (which likely would have been cancelled anyway due to the earthquake). It was mostly confined to the lower divisions, though, and had a lot to do with the very unfair economics of the sport.
But sumo is infectuous to watch. On a bit of a whim, my wife and I saw a tournament in Tokyo back in 2008. I've been following it ever since.
Vorhagen, how long did you stay in Japan? Did you just visit Tokyo?