Andy Baron and Greg Armstong Photo: courtesy of the subject Greg Armstrong had followed the routine hundreds of times. The night before a Knicks game, he’d lay out his orange-and-blue clothes, so he could change speedily in the bathroom of a Westchester ShopRite, where he is a manager, and get to Madison Square Garden early. This time the task was tougher than usual. Not only because Armstrong owns more than 200 pieces of Knicks gear, stored in his Knicks mancave. But because after 34 years of