So what did Motzko do and why did he do it?

He violated the WCHA Code of Conduct/Sportsmanship Rules.

With the score 5-4 and 90 seconds left, the Huskies appeared to score the tying goal. But referee Brett Klozowski had lost sight of the puck underneath goalie Joe Howe's arm and blew his whistle. Then the puck went into the net. After officials reviewed replays, they stuck with the decision on the ice: No goal.

Motzko went on the ice after the game and had to be restrained by other officials as he argued with Klozowski, according to game stories written by Candace Horgan of uscholcom and Joe Paisley of the Colorado Springs Gazette.

"We scored a goal," Motzko said later. "Everybody in the rink knows we scored a goal."