The stupidity of AA OperAAtions is unparalleled by even the best Abbott & Costello routine! This kind of thing is StAndArd OperAAting Procedure for Operations in MIA, especially on any flight involving those broken down air buses.
FYI four is not a record, in the days when AA went from MIA to SEA, I had NINE, count 'em, NINE changes in just under 3.5 hours. What made it all laughable was by the time we were certain about the gate, and actually started boarding the plane - we were right back to the gate where the flight was originally scheduled to leave from. One of the gates we got shuffled to had a Tower Air 747 parked there. It was like a cruel joke. I wondered if it was "Bring your kid to work" day and they let some little ankle biter have at the computers.