He was crying? If so, who's to say he's crying from physical pain? To me the guy looks like he's depressed; he doesn't seem to find any joy in his sumo, and the way he stated that you don't make friends in sumo is quite telling I think. Japan can be tough on foreigners - maybe he's tired of it all, lonely and miserable, but uncertain about what's expecting him if he should be a "quitter" and go home. Would explain his results too, we all know that he can if he really wants to...