Red Wings/Canucks game

[stan-MI]

Hey, I'm a basketball official and had a question about positioning of a hockey referee from the 2/18 Red Wings game. The referee deep in the offensive zone was positioned on or in front of the goal line and perhaps one-third of the distance from the goal to the corner. Unfortunately for the Wings, a missed shot hit his skate and rebounded in front, where the Vancouver player put it in an open net with about 14 seconds left in regulation.

My question: where is that official supposed to be positioned? What factors dictate his positioning? There's been a lot of griping in the media about the official being out of position, but I figure it was probably just a bad break because the official couldn't jump out of the way fast enough.