How long has this rule been in effect?
Oh my.
84.2 Overtime Regular-season Extra Attacker - A team shall be allowed to pull its goalkeeper in favor of an additional skater in the overtime period. However, should that team lose the game during the time in which the goalkeeper has been removed, it would forfeit the automatic point gained in the tie at the end of regulation play, except if the goalkeeper has been removed at the call of a delayed penalty against the other team. Should the goalkeeper proceed to his bench for an extra attacker due to a delayed penalty call against the opposing team, and should the non-offending team shoot the puck directly into their own goal, the game shall be over and the team that was to be penalized declared the winner.
Oh my.