Yea, I saw that a few years ago. It helped when this happened to me while heliskiing in February.
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It wasn't a crevasse, but was a snow bridge across a creek that collapsed when I skied across it. I dropped about 5 feet and my skis were holding me up. I had to wait 15 minutes before the tail gunner came by -- he almost didn't see me. I could then release my skis (I kept them on as I was unsure how much further I would drop, and if I dropped more than a few inches I would have been completely unobservable).
It was an experience!
Mike