Treadigraph,
I shan't challenge the information you have, as mine is based only upon recollection of all those years ago. The event was very memorable for me though, as a glaring example of how low level aerobatics, even flown by a pro(?) are potentially fatal. We heard it was fatal a few days later, as it was not announced at the time. I do have a photo of the wreck, as we taxied past it to take off that afternoon. Impacting the earth level, but on a somewhat vertical path, with the wheels retracted, and sitting on the wing spar, is doubtful as survivable.