I read his statement as he was going to illegally download the multiplayer maps and try to get on live, my bad. As long as your other box wasn't banned you're okay (and the modded box hasn't been on live).
I think the best thing to do is format/rebuild your C and E drives with the MS Dash from a slayer's disk before you get on. I copied/ftp'd the content from my stock hard drive that was on live and followed the marriage theory, but was banned. The HDD content is the only ambiguous key for me right now...
