That particular event happened in the DC area, but it was several decades ago and it wasn't in the BFMS/FSGW circles. Similar things have happened elsewhere and it just put me off ECD.

My particular dance form (when I have the time and energy) is contradancing. I''ve been away from it for a while, although now that I'm unemployed I'll probably wander back.

And, yes, Adelphi Mill is a fine venue for dancing and partying. It is a favorite spot for weddings/receptions/anniversary parties in the dance community.