Did NBC intentionally edit the words "Under God" out of the Pledge of Allegiance?

Of course they did. If it had been live there was a slight chance that it could have been unintentional. The fact that it was taped proves that it was intentional. Once a video tape is produced, as this had been, rest assured that every second of video + every second of audio on the tape was shot, edited, directed and produced exactly how the director & producer(s) intended it to be.