The evidence against Shady was even stronger than Mendicant. Mountains of technical data corroborated independently by other players with direct knowledge. We know this definitively. The best analogy is catching an employee stealing from the register, and then going back and checking the video tapes and accounting books for two years and seeing hundreds of instances. To the point about "accusations", they are not. This is the administrative action for what has been definitively proven. We don't share all of the evidence because it would violate the player's privacy and simply provide a roadmap for how to cheat and ruin the experience of hundreds of other players for two years.
EDIT: one thing that can probably be shared without consequence is that it was one main account (Shady's) controlling 7 others. A lot of nobles in OI, a lot in OG. All of them aiding Shady's characters in some way or another. This is all BESIDE the hard, technical, evidence, mind you. So, if Shady continues to protest his innocence to you privately, then I'm very sorry that he's put anyone in such an incredibly awkward position through a selfish decision to lie to his friends. This is why you don't cheat. The longer you get away with it, the greater the consequences when you're caught and the farther the fall. NOBODY enjoys it when this happens.