Hey man, I hate to be the bearer of bad news, but I think you might be screwed. Dead Money is unfortunately full of these kind of situations, and generally not very well designed when it comes down to it, the worst DLC by far. I played through NV about a dozen times, and a similar thing happened to me once. Only that I fell off a walkway so stupid while saving that I had no time to get up again before the collar goes boom. Are you playing on PC? Then just cheat your way out using the console, if not *sigh* I dont think you can get out of there and have to reload or restart( I lost around 10 hours to the walkway incident so I feel your pain if thats what you gotta do).
Edit: You arent in the kitchen already and get spotted by Dog are you? Beacause then you blow up anyway. Sorry but your description combined with the confusing layout of the Sierra Madre makes it hard to know what place you mean.
-
This reply was modified 9 months, 3 weeks ago by
cthuloops85. Reason: additional info/question