» Fri May 27, 2011 6:21 am
If you are on the PC, you can open the console (hit ~) and type in tcl to turn collisions off. Then you just walk right through the vault door. That's what I did when I got stuck.
If you aren't on the PC, then the only thing I can think of is to reload a previous save before you closed the vault door. I don't think there's a way to open it from the inside.