After toying with it for a few I figured out a simple fix to get everyone on XBOX that has saved game loading trouble by until the official fix is released on LIVE.
Go to your dashboard and then go to Settings ---> System Settings---> Memory ----> Games ---> Fallout New Vegas. find the "fallout new vegas title update #3" file and delete it (the name might not be exact but it's not any DLC or saved game file so it should stick out like a sore thumb, also the date created should be only a day old). sign in if you arent already and start the game and the game will as if you want to update the game. DECLINE the update and continue to the main screen. You should be able to load all of your saved games with out the DLC error or freezing. That should get us all back to playing until Bethesda can get the Fix out for the update.
If the above doesn't work after deleting the update try to download the DLC again and restart your XBOX before starting up the game, be sure to DECLINE the update!!!!
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