They have a plaque for him in the base lodge. He also had over 7M vertical for the season. He was over 70 and died of cancer the next fall. It was before my time, but somebody told me that they let him cheat a little bit on opening and closing. I don't think 100k is possible otherwise unless maybe you are skiing at racing speeds with the mountain to yourself.
My high a Sun Valley is about 76,500, determined by both my Vertech and lift ride count. Caught both an upper mpountain lift and the gondola about two minutes before closing.
Phenomenal story. Thanks for passing that on!
I have to admit that my last run was allowed only because the Thunder lift supervisor was a friend. I theoretically "missed" closing by less than a minute.