The Snoopy pilot was Ross Rundle (retired), he did hundreds of these displays. The 'handler' in this case was Steve Graham (HeliCorp?), but the act was often conducted by a female clerk from the SAA at Oakey - can't remember her name. The commentator was Paddy O'Brian (RIP), killed in an EMS accident at Rockhampton (mid 90's?).
The demo. was stunning to see live, and appreciated by all. The fixed wing guys also did a gobb-smacking demo in the Pilatus Porter, flying in/out of areas no bigger than the stadium.
Of course there was risk, but it seems in today's world that mediocrity and arse covering is the norm. I spent my first years in the those last days of the 'golden era' of aviation, and although we do lot of things better now, we have lost that passion and grit.