At the core of the dispute was the fact the Eastern Bloc countries, mainly the Soviet Union and Czechoslovakia, were able to have their older, full time NHL-caliber players classified as amateurs due to technically being considered non-professionals under their communist system, which most often listed their profession as that of a solider, whose military assignment was to play hockey.
As a result of the dispute, Canada declined to host the 1970 World Championships as scheduled, nor participate in the World Championships from 1970 through 1976. Canada also declined to compete at the Olympic hockey tournament in both 1972 and 1976 until an agreement was finally reached to allow professional players to compete in IIHF competitions and the annual World Championships were moved to later into the spring, which allowed NHL players no longer involved in the Stanley Cup playoffs an opportunity to compete for their country.
When Canada did return to the World Championships in 1977, it was with one of the most garish jerseys in their history, a garish four color maple leaf crest, which looks not unlike an explosion in progress! Another unusual aspect of their jerseys was the use of contrasting nameplates of white with red letters.
Still, the change in IIHF policy wasn't as if Canada was handed a gift, as it would take the Canadians 17 years to win their next World Championship in 1994 and until 2002 to win an Olympic gold medal for the first time in 50 years.
Given the chance to include professionals for the first time in 1977, they sent over a roster which included the likes of NHLers Ron Ellis, Phil Esposito, Tony Esposito, Rod Gilbert, Pierre Larouche, Al MacAdam, Wilf Paiement, Jean Pronovost, Dallas Smith, Carol Vadnais and Eric Vail. Even with the professional roster additions, Canada went 6-3-1, losing to Sweden 4-2 and the Soviet Union 11-1 in the First Round and 8-1 to the Soviets in the Final Round to place fourth and out of the medals in their first time returning to the World Championships after spending the previous seven years on the sidelines.