What are we going on about here seriously?
Fixing professional sports is about the money, not getting another medal for a fancy medal table that people will remember for another 2 weeks....
These are NHL professional refs making 6 figure salaries. The idea that they, or the NHL (a billion dollar industry) would risk getting caught up in a match fixing scandal when neither themselves or the NHL have anything to gain from a particular outcome.... doesn't make any sense.
The problem isn't having countries represented in judging boards. Eliminating same country judges for competitors is silly; often times, the best judges will come from the countries that are strongest. It's about having transparency.
Figure skating etc. is in danger because they are not providing transparency in judging. However, here these refs were picked in advance based on their performance in previous games and in advance of knowing who was playing in the finals. All four teams (Canada, US, Finland and Sweden) were apparently ok with it.
According to portions this board, apparently the easiest way to fix a game is to find a ref from some obscure country, pay him a couple million to fix the game and no one would think twice because "He's a neutral!".
Besides, if you wanted to make a Canadian ref match fixing conspiracy, you missed the chance. The conspiracy would have been in fixing the matches so that Canada made the finals (lots of money in Canada with viewership). Now that they have made the finals, there is no more gain to be had.