Yes they do.
I am shooting Wraith bombs at a damaged column in the middle of a map. It's not moving. At all.
I AM using damaged columns for my damn wall. They can't move! And what do you mean "multi-walls?"
This is simply ridiculous! I'm trying to make a large wall composed of damaged/stone columns, but they can't move an inch by Wraith fire, Scorpion...
Hey ladies and gents! As an ignored Forger, I decided to slip on over here and see how things are with other Forgers in the Halo3 community....