Stuck inside Museum gift shop

I'm in a dilemma here. I'm level 21, have all the DLCs downloaded and for a few weeks my character has been stuck inside the museum gift shop. My last save before that was when I was level 18 right before "Take It Back" and anytime I walk through the door
to leave (there's only one way in and out) my game freezes. I brought my Fallout back to the shop and got it replaced thinking it was the game, but it's still the same and there's no difference. The game never froze for me at this point for previous quests
so I don't know why it's happening now. I had just completed "Death From Above" and "Shock Value."

I'm just after walking into the gift shop to start those small quests for Scribe Bigsley, and did not realise this was about to happen. I've played through Fallout many times and this hasn't happened before. I ended up deleting Broken Steel, then loading
the game, again and I spawned outside of Vault 101 this time. (I've never done this before.) I went back to the dashboard and redownloaded Broken Steel, but now the quest "Who Dares Wins" won't load and I haven't gone back to the gift shop. My level cap has
been loaded though.

Fallout 3 is installed to my hard drive too. I've had this Xbox 360 since December 2009 and I've never had any problems with it, but I think it could have something to do with the console. I'm getting an Xbox One for Christmas in anyways but I really do
like this game since I got it when it first came out. Is there any way around this?? I've tried looking up solutions but I think this problem might be one of a kind. Thanks in advance.

:)

 

Family Jewels achievement help! (Spoilers)

Yeah, I thought the same, and then decided to do some traveling to find more trophies. Came across more Two-face goons at the courthouse. so between Museum, Subway entrance and Museum (none are inside any of them).

 

They shut down Modern Combat for this????

wow you're really stuck in the past. Can we put you in our Battlefield Museum?

Exhibit A, Native to BackStab and BridgeTooFar

this rare creature tried to evolve but couldnt quite manage it.