Payne Stewart was the famous golfer you're thinking of,
trap one.
Ther was also an instance with a King Air from the UK that was undertaking an air test. From memory, the crew (2POB) donned masks and initiated a deliberate depressurisation whilst the aircraft was stabilised in a turn on AP. Unfortunately the masks were not connected to the O2 system and the turning aircraft then was blown into France, intercepted by the Armee de l'Air on the way, until it ran out of fuel. This must have been in the late 80s/early 90s, but I can't find the report on the AAIB site.