y'know sometimes stuff like this does happen. 99% accuracy is only as accurate as it says. It almost sounds like you're trying to imply an overarching conspiracy of riot trying to hide things like this from us but brave little you posted it.
edit: ERMEERGERHD LOOK AT DIS ONE CASE OUTTA AN OCEAN OF THEM DIS ONE WRUNG ENTIRE SYSTEM MUST BE BROUGHT DOWN
Riot has stated many times that there is an INCREDIBLEY small margin of error and they would fix any erronious bans suchas this.
Why don't you also put up ALL the cases of people who deserved the ban?