Yes. I forgot how to go about it. But I have my 360 to power on with out signing in a profile. So I then go over to preferences and choose "appear offline" and then sign in my GT. --- ".... anyone who would question that the perpetrator of mass murder on American soil didn't deserve what he got needs to have their head examined."
You need to turn off auto sign-in, then before you sign in, go to online status and select "offline". Your status will reset every time you shut the system off though so you'll need to set it to "offline" every time. AFAIK there is no permanent offline setting.
I don't get what's so hard about just unplugging the ethernet cord, that's what I do. If I don't need LIVE's services there's no need for me to connect to it. And I don't have to miff with settings. --- "In peace, vigilance. In war, victory. In death, sacrifice." ~ Grey Wardens http://www.trueachievements.com/mygames.aspx?gamerid=71900&complete=1