Yes, I dropped a Brodex 60fter (the beast) only extended to about 50 though, whilst standing the thing up.
I was in Covent Garden and it just went, no way of stopping it so just had to point it in the right direction. Luckily there was no traffic as it landed in the road. My little heart was going like the clappers, but no damage to pole or anything else, Luckily!!!
Its the first time and don't want to do it again.