Stuff like this happens all the time, just not during the Kentucky Derby.
Why can't (won't) the stations just hit rewind and play the segment back from the cut off point when they do this? Yeah, it wouldn't be live... it might be delayed a minute... but I suspect it's already delayed 15-30 seconds, better to see it a minute late than not at all. I'd make the same argument for weather break-ins, why can't they hit pause on the network feed, tell me a tornado is 100 miles away, then go back to the show without missing anything?
Is my DVR more advanced than the WALB master control room?