Anybody know on the 360 if I was to delete the title update information and play offline, would I be able to use iron daggers to level up my Blacksmithing with the dawnguard dlc installed and played offline or would I have to delete the dlc and title update, and level up my blacksmithing?

Yes, you would.

Yes I would what? delete the DLC and Dawnguard and play offline or just delete the Title update and have the DLC installed and play offline?