Chris:

I thought the exploding BIC was an urban myth? Is there any valid documentation for such an event? What were the circumstances?

The only thing I can can think of was something I saw happen: bunch of guys standing around talking in cold weather. Guy is idly playing with lighter in his pocket, flicking the 'child proof' fuel tab down. Then, for reasons he can't explain, flicked the flint wheel on the lighter while still in his pocket. His pocket went up pretty good, but it was by no means an explosion.