Interference includes a situation where;
(2) an attacking player
initiates more than incidental contact with a goalkeeper, inside or outside of his goal crease. Incidental contact with a goalkeeper will be permitted, and resulting goals allowed, when such contact is initiated outside of the goal crease, provided the attacking player has made a reasonable effort to avoid such contact
. The rule will be enforced exclusively in accordance with the on-ice judgement of the Referee(s), and not by means of video replay or review.
http://www.nhl.com/ice/page.htm?id=25040
It may be that the war room was bound by the bad call on the ice.