I have 2 xbox 360 consoles and I have found a way to play TTK on both with multiple accounts on one of them. This requires that one of your consoles has 2 controllers because you will need to sign in with the profile that purchased TTK and the one playing at the same time temporarily. This is what I did. I started the game up under the other profile (my son's). TTK says need to purchase...yadda yadda. I then used the second controller to sign in with purchasing profile (mine). TTK purchase no longer required and he can now start playing TTK content. Sign out of purchasing profile (mine) and go sign in on other xbox with purchasing profile (mine) and play together. It seems that once TTK is unlocked by purchasing profile it stays unlocked even though purchasing profile signs out for the session. Annoying but it seems to work.