The incident came Sunday at home against the Ottawa Senators. Sens defenseman Mark Borowiecki fell down in the corner boards and while he was getting back onto his feet in a still very vulnerable position, Westgarth hit him into the boards from behind. Borowiecki was helped off the ice and didn't return with a neck injury.
It was a very dangerous hit, one that could have easily resulted in a bigger in-game punishment than the two-minute boarding minor Westgarth received. That doesn't factor in for the NHL, though; it gave out punishment regardless.
What the NHL does factor is that Borowiecki was not in a position to be checked but Westgarth did so anyway, even if he didn't hit with a tremendous amount of force. The injury combined with the lack of supplemental discipline in his career, Westgarth was given the two-game ban. Seems right for what was just a dumb hit.
As a result of the suspension, Westgarth also gives up $7,435.90 in salary over the two games.