I think that was in the second half of the season, but a little earlier than this.
I think the one you're talking about was the Hall OT winner on Cam Ward, which was on a very weak rebound that Cam Ward should have covered. I don't think anybody but Hall realized it wasn't covered.
I think that game was actually the night after the Tampa game I went to, where Eddie Lack played and stopped like 49 out of 52 or something for the win.
I'm looking at the schedule for that year and the only OT win we had after that Carolina OT win on February 18th was on March 23rd against Pittsburgh. We also lost in OT to Pittsburgh a week later, which wound up being our only loss in the middle of a 7-0-1 stretch that clinched us a playoff spot in game 81 of that season. I can't remember who scored the Pittsburgh OT winner, but that might have been the game where Blake Coleman was clearly lip read saying ''I f***ing own you'' to Crosby.
Looked it up, apparently it was Hall (from Nico) that also scored the OT winner on Pittsburgh in game 74 of that season. Was that the odd angle one? I gotta look it up and see if I can find it on youtube.