One of my fears about the current political situation is that the DNC will realize that they can get away with just about anything, as long as they're still not as bad as the Republicans, using the unassailable logic of "what are you going to do, vote for Trump?"
I took that to mean that only one irate traveler per month made it to wherever the complaint box is (locked room in the basement?) before being tackled by security and charged with something like disorderly conduct or resisting arrest.
I interpreted the "can't determine when it was downloaded" to mean that the time stamp, file location, or other metadata either implied another user downloaded/copied it, or ruled him out as the downloader. If they were to plant a file, I would think they would match the times stamp, etc., to clearly implicate Gartenlaub (assuming minimal competency, which could be where my expectations diverge from reality).