Very valid point, anytime this type of thing happens it is a "no excuse" event for the fans.
The Heidi Incident in Nov, 1968 was a classic event in that it was a true SNAFU. Not a Superbowl game but a regularly scheduled American Football League game, NBC had a contractual agreement with Timex to air "Heidi" in the 7-9PM time slot and the network had instructed the on site NBC supervisor to cut to Heidi whether the game was over or not. He followed his instructions which immedialtely triggered a flood of telephone calls which had the unfortunate side effect of blocking the telephone call from NBC New York exec's trying to call and tell them NOT to cut away.
The thing I have always wondered about is when these things happen, I am sure that the on site cameras didn't miss anything and they should have rectified it immediately. On-site supervisory personnel should have the authority to deal with it on the spot and let the New York studios sort the mess out later.