Does anyone know what the orginal plan for the flypast was?. If he was planning to do a "high alpha" pass like the Airbus display pilots do at airshows he would, as they do, have disabled alpha-floor protection by holding the pb's in for 15 seconds which disconnects all the autothrust functions including alpha-floor for the remainder of the flight.
It's a bit ironic that Airbus's airshow party piece is only possible with one of the main protections locked out.