Okay i'll put this as simple as i can.
I finish the dead money story, defeat Elijah, escape before death.
so yeah i feel i'm home free and am about to return to the mojave.
Only one problem, i can't return to the mojave.
after selecting to return, my game goes into a major hard freeze after trying to load the cutscenes.
i've seen my brother finish the DLC and i've tried to reinstall it and nothing helps,
trying to go back further into the DLC from saves didnt help neither.

PS the only thing that gets the cut scenes going is by opening up the xbox guide, but after the first opening lines the game still freezes.
i know there may not be any answers but help?

You say you defeated Elijah, did you kill him? Or did you leave him to die in the vault? There were known issues with escaping and leaving him alive that I don't believe were fixed, but I think most people who killed him had less problems. You might want to check a few solutions in the DLC Hardware and Software Issues section of the forum.