That call last night just cannot happen.
CANNOT. HAPPEN.
Especially because they had a 2nd chance to get it right. In situations like that you have to interview the ref and get him to comment publicly on why he made that call initially. That was the entire problem. If he lets the goal go Columbus would challenge (because with 8 seconds left they have nothing to lose), and then they could always correct it the other way.
No doubt in my mind that in the quiet corners of the NHL "ref world" he knows he blew it, and the NHL and ref community are probably letting him know it.
It all sucks, but bigger picture...Don't let your season come down to the refs.