I'VE FOUND THE PICTURES AND THEY MAKE ME SO HAPPY. (Linking to the mobile version of the post, as the desktop version has autoplaying background music, but the mobile version should work fine even if you're using a computer.) Some of these pictures are slightly NSFW, I should mention.

In order of joining in with the dancing: black-haired guy is Japanese Yuri, determined blond guy in the blue suit is Russian Yuri, blond guy who's definitely not in a blue suit is a Swiss skater I can't remember the name of (Christoph?), silver-haired guy is Victor.