first of all, hello there dear ngu community. ive been learning about hacking/modding for some time now, and came across this nice site you have here, glad i can participate and learn even more.
OT:
ms attempted to patch these methods, but there are new ways discovered on how to log into the modded profiles, or even the banned ones, and play the desired game, even with the dashboard update of 7/19/2011.
i trust the community i have this information from to a 100% saying this works, and tested it with castle crashers, black ops mappack 2 and galaga legions dx; only problem is that the modded accounts like to sign the console out of live, making it hard/almost impossible to enjoy the black ops mappack online, only exception is galaga legions where the profile would not kick me out of live. despite this, castle crashers works 100% online if done correctly, but i have not tested any gods yet.