Was also at said show and remember the incident quite well - my family live with good view of crash site. The crew was fairly junior team, agreed to do flypast on RTB, during flypast, were told by ATC that a panel had fallen off (subsequently recovered I think), aircraft went around and crashed during this manoeuvre.
Very sad, and one of several accidents in the area (Air India jumbo washed up on the beach for many months, and uncle R Pasfield deposited Hawk on the hill!)