Here are the two Koreans on the track, at least half a lap before the hand off. The Korean closer to the inside has not been tagged, yet is clearly interfering with the Chinese, and getting int he way of Canada.
Two seconds later, two Koreans still on the track. Now the non-tagged Korean is clearly blocking the Italian skater.
I really, really want to make it clear that I am complaining about this not because Canada lost out on a medal (though there is that, too). It's because I really like this sport and corruption like this does not help its image. It already seems dodgy, and decisions like this with no accountability (the judges didn't even have to give reasons for their decisions), really discredits the sport.