Nimrod tampering with wiring in cabin
First, if I saw this nimrod tampering with the wiring next to me I would probably club him to death with my cellphone or laptop, and probably have a dozen helpers. This guy needs to be placed on the no-fly list and go to jail for risking the lives of everyone on the planes he may have imperiled.
Second, even if he were an AFDX expert (which I doubt), his simulations were undoubtedly based upon COTS routers and not real hardware, since he would have to get through dedicated, single purpose point-to-point virtual links certified to DO-178 standards to move up the tiers. The same scrutiny applies to the older protocols.
The whole thing seems like a bunch of hype, and the Feds rightfully called his bluff. I'll bet he does time.