One of the reasons why the Montreal Canadiens’ rebuild has been a success so far is that management hasn’t been afraid to admit when it was wrong. For instance, when Kent Hughes traded Artturi Lehkonen to the Colorado Avalanche, the hope was that Justin Barron would become the ever-elusive puck-moving right-shot defenseman. Two and a half seasons later, it wasn’t happening, so the Jeff Gorton and Hughes duo decided it was time to move on. They sent Barron to Nashville for Alexandre Carrier, who