Wow, the evidence seems pretty solid in this matter. No matter what though, cheating is cheating, nothing around it and nothing can justify it. If this is the case, which its looking to be so, that team should be disqualified if they havent been already and kept from participating in any future games.
Riot for blatantly trying to hide the post extremely upsets me. If I was any part of the higher ups for the ESL, I would have had a formal inquiry placed on Riot and their stance as a company in the ESL revoked.