My reasoning can be discerned from the sum total of the day's arguments, I don't really feel like hashing it out again, but in short, you're the least verifiable, and Cat 5 can just scramble, so mechanically it's probably you. Your claims, while true, could have been concocted by a knowledgeable scum, and you have motive if you knew you had to kill the mastermind for bussing.