First: Isn't this in the wrong forum? Isn't there a section for Dead Money Spoilers and Cheats?
No its not the wrong forum, cause people without the DLC might want to access the bunker again.
Second: There is a very high chance that the interior of the bunker wasn't coded until they made Dead Money. Leaving the interior section of the bunker unncoded makes it easy on the developers of Dead Money. They don't need any foresight, and they aren't stuck with any choices they may have made before production of Dead Money got too far along.
Wrong, you could access the bunker before the 1st patch and retrieve the scrap electronics and dean electronics contained within.
Edit: ha you edited out part of your post, so you wouldn't look so foolish.