I firmly believe that Cory, Daemonica, Libra Pheonix, and Tyler were all the same sad, sad, uber-disturbed individual. Hexadecimal22 and "MG" have an awfully similar writing style to all those prior masterminds. (Mastermind...?*gigglesnortcackle*)
Coincidence? God, I hope so. Because if it's the same person trolling us over and over, that is utterly the saddest thing I have ever heard.