Textron don't have to buy the aircraft back; there is no need to do so. Just sell the aircraft and move on; there is nothing wrong with it.
All Cessna, Rockwell Collins have to do is call for Norbury's training records from Flight Safety, speak to people whom knew the man back in those days.
Put the Aus Jet CP 'Chop' into the witness box.
Bring in CASA to find out whom upgraded his licence to fly single pilot in Australia
He is not even a "B' list social celebrity !