What gets me is grandparents and kids were never locked out. There was a keypad on the house and that's how the parents got in when they arrive home without keys (because the keys are in the delayed baggage.)
As with Tedgrrrr's venting in another thread, I have problems with people not checking attitude. If getting home to children was the issue, then one parent should have flown ahead, as was originally offered. (And if traveling with 'his gal' was so important to Ted, he should have traveled on the flight he originally booked instead of getting his knickers in a knot over 'his gal' being denied a free standby change and his being told to fly ahead without her.)
There are a lot of true horror stories about how people are treated on AC (and on AP tickets.) These two latest examples are not among them.