traitor Minions in Aram

Our own minions attacked us in an Aram game. We couldn't target or AA them and most Aoe spells didn't work on them (for me as only my Q worked, both in Mini and Mega Gnar). They executed us and destroyed our first two turrets. The turrets didn't target them and the enemy team couldn't get them under the turret and so there were over 50 minions when the turrets were down. Because we were all (us and the enemys) Level 4, we couldn't stop them. They ignored our inhib and started going to the enemys turrets. They executed every enemy Chap and killed every enemy Minion on the way... After they took out the enemy turrets and inhib they started to go back and forth between both inhibs and attack everyone. Sometimes they even attacked themselves. After 25 mins or so i dced and was not reconnecting, so I left the game to reconnect from the client, but the game was gone. It is not in my match history so i can't get a replay. The players are not even in my recently played list so i don't know who they are. I only took one screenshot while in game, where I died through my own minions.