Anyone ever had to use a winch guillotine for real?

With all this talk about plasma rope, etc. and the need for guillotines,
etc. I got to wondering how many times had winch guillotines been
operated in a real emergency. Certainly people have tested them, but if
you know of a case where the winch driver had to cut a glider loose, let
us know here on RAS. We don't need too many specifics, just trying to
see how many times it's happened.

Gary