The original program for Thursday morning’s September 11 Museum dedication ceremony said that Christie’s remarks would be followed by an Idina Menzel performance of “Bridge Over Troubled Water,” which would have been hilarious, if not entirely appropriate for such a solemn occasion. But just before the event, a museum spokesperson announced that Menzel was sick, so Broadway singer LaChanze did “Amazing Grace” instead. The spokesperson also insisted that the change was unrelated to Christie, which is exactly as believable as the New Jersey governor’s claim that he had nothing to do with Bridgegate.