He can't. The GUID is banned by us and every other AC outfit, as well as being globally banned by Evenbalance themselves.
The GUID is caused by having an invalid cd key entered on installation. So, nobody who gets that GUID has hacked - but it will remain on our MBI to prevent people with improper cd keys accessing servers. To be linked to it on the MPI is no big deal at all - hell, if I type in my CD key wrong in 2142, I would be linked to it too ;)