Forum:Secret Armory-I'm locked out!

All right, here's the problem. I just recently defeated general Knoxx and entered the armory place. I opened the munitions thing and the doors locked behind my character. Before I set the detonatore my mom comes in and tells me to turn off my Xbox and do chores. So, I exit and save, then go finish chores. I come back and I'm all the way back at the fast travel! I go back to the armory, fight Knoxx AGAIN, then find the doors lock me out of the control room! I can't set the detonator, so I'm unable to finish the mission and grab the loot! WTF! I need someone close to the end of the game to help me finish this, someone near or right after defeating General Knoxx. I already have tons of good weapons so I doubt I'll try and steal too many items from you, I only really focus on good SMGs and elementals. I can pretty much kill General Knoxx and his devestators in about 15 full clips from my Anarchy, and since I have an ammo regen class mod I can obliterate stuff pretty fast. If someone is willing to help me please send me a message on Xbox live, Gamertag: Zylo t Wolfbane