johnfairr,
The Geoff in question was on 10 Sqn a few years ago. He related the stories to me.
IIRC the first was caused by the aircraft over rotating after launch. The second was an engine fire or fuel leak (can't remember which) which ended up with the aircraft exploding just after the crew had ejected. Geoff landed in a pub car park and was somewhat "merry" by the time the SAR helo came to pick him up.