When entering Gomorrah, if you choose the option to refuse to disarm and leave, you will successfully leave, but trying to re-enter causes a game breaking glitch where your HUD is gone and you are stuck in place. You must reload from a previous save to get out of it. I couldn't find any console command that helped, including TCL.

Yet another bug on the massive pile of fail and spaghetti code.

I've found a solution to this bug. First, get the "How Little We Know" quest from the Yes Man or elsewhere. Next, make sure that is selected as your active quest in your Pip-Boy. Then go into the console by pressing ` then enter movetoqt. You will warp into gommorah without the bugged weapon check occurring. This is slightly cheating since you can avoid disarmament inside the building, but whatever.

Yes, I have the exact same problem. I would like to know a way to do this without the: "Cheating" part if possible.