What peteropny is describing seems like Delta reacting to an extraordanary situation as if it has been a routine cancellation. I don't see how you can compare this to a flat tire on a bus. I would expect that many FF would be terribly traumatized by such an event and would find it extremely difficult to stand on their feet, never mind stand in a line waiting for an agent who doesn't see what the big deal is to rebook them and remind them not to be cranky. I suspect that what peteropny (and the rest of the pasengers) really could have used at that moment was some compassion and understanding, and it doesn't sound like that's what he got.