The NHL fined Vlasic $8,378.38 for the infraction at the end of Wednesday's 4-2 victory against the Wild.
Vlasic and Heatley were jostling in the closing seconds of the game. After Vlasic delivered a cross check, Heatley responded by swinging his stick at Vlasic. He missed and Vlasic retaliated and hit Heatley with his stick.
The Wild were upset after the game because Heatley was hurt. But the NHL says the injury came in the ensuing scrum and not from the slash.