http://www.ntsb.gov/aviationquery/br...id=69003&key=0 was the
one I was thinking about, particularly.

There was also a stall/spin during a winch launch in Australia,
although this was likely a pilot problem not a glider problem. Not
clear if it was a nose hook or CG hook.
http://www.atsb.gov.au/mwg-internal/...?id=zZ6wAFQTTM

give me a call in the evening and we can talk.