My guess is he is her personal coach, and not an official part of the Japanese team. Probably he is officially employed by Team China. Just my speculationChina's ski association should have just given the guy a japanese jacket as well (although it would require permission from Japan/sponsorship approval). He has already contributed more to China than many chinese.
'vanished' is the new 'at what cost'
This guy is worse than that Serpentza dude, who was a crappy English teacher and bragged about how he "trained" doctors, lawyers, engineers, VPs etc lol