ahhh thanks! so can i sign out of xbox live alone but remain signed in to the profile and access FSD??? and some of my games arent working on xblse. i play it from xex menu, screen goes black for a bit and i return back to dashboard....
To avoid booting straight into FSD, try holding the RB button as soon it's booting up, this will put you into the Official Dash also. Yes, if you excessively mod, boot into FSD while signed into Xbox Live you'll be banned. When modding is involved there is a chance you'll be banned, if XBLSE is still free you'll mostly get a KV ban in hours. Source: Own experience.
If you Google you can pay for a day service which includes gold spoofing and necessary protection to stop you being banned. A Ban Bypass is on the server that allows your profile to connect to the Black Ops servers if it's been banned for modding, this applies to Advanced Warfare, Destiny and so on.