Livewire, you need to use Hammer as well as Twister to get the twisted hallway.
Create a twist in "Hallway mode"
Open it in Hammer
Right click > Paste special
-Number of copies to paste: 3
-Everything else 0
Arrange the 3 new displacements so that they form a hallway with the corners just touching in the x/z (bottom right) view. It should look like this: Hope this helps. If you still can't figure it out I can send you my example map.
EDIT: Also, it scales the twist maximum down by the resolution of the displacement. Try setting displacement power to 4, you should be able to do 360 degrees.
EDIT2: Maybe not. I can't manage to do it
Possible bug noted.