I'm pretty sure the NHL would agree to give other players and their teams a percentage of the NHLPA's cut based on their numbers. In the last Olympics of the 150 players on (CAN, USA, SWE, RUS, FIN, CZE) 121 were NHLers, 22 KHLers (3 of who were backup goalies), and 7 from other leagues.
From the players cut I would just give 80% to the NHLPA, 15% to the KHL players and 5% to the rest. It would actually be a great deal for the players from Europe, a nice bonus for most relative to their regular salaries.