Board Thread:Questions and Answers/@comment-70.54.120.220-20150222002034/@comment-6697950-20150222113749

The possibility is non-existent, since the GM status is tied to Heathcliff's account, not Kirito's. Unless he modified his own account to attach GM privilieges to it, he would need to log in with Heathcliff's account to use any GM privileges. Therefore, you can only say that there is a possibility that Heathcliff's account still has GM status, not that there is a possibility that Kirito is a GM.