Very plausible, and great explanation. Well done. My wife and i were headed to the airport several years ago, we were running late due to a flat tire. By the time we got to the airport, they had all ready drawn back the walkway. When i asked if there was anyway to catch our flight, they just moved it back out, and we boarded.
Interesting. I did not record the show last night, so I cannot look again, but it seemed to me that the plane had already begun to taxi away from the gate and then backed up. Is that possible? Was I just seeing things?