I'm looking into this case. It's a bit complicated and is not a straight forward toxic behavior case. It does not have anything to do with 3xecutioner's games with a Rioter. Rioters raging definitely isn't ideal behavior but we need to handle that separately and that is not the reason for this ban.
An important distinction to note is that bans that don't end on 2286 (straight forward toxic behavior permanent bans) tend to be unique cases that are not discussed openly on the forums. The only reason it took so long to respond to the thread isn't because it's a lose-lose situation or Riot made an obvious error; to be honest, I've just been sick for a few days and not posting much. statuskwoh mentioned this thread (and the Reddit thread) to me, so I figured I'd give everyone a heads-up first that we'll follow-up on this case in the next few days.