[supercat]

One point nobody has mentioned on this thread is that, per another thread, the club had glued glitter to the foam. Many spray adhesives are extremely flammable and remain so after application. While I wouldn't expect polyurethane foam to ignite readily from sparks (it does burn well once ignited), if there was any exposed glue residue that could have been ignited exceptionally readily and in turn ignited the foam underneath.

[Poohbah]

Holy s**t.

You're right on about the glue--and about how readily it would ignite the foam.

[Nita Nuprez]

Add the glitter industry.