I believe this are Alts of players using a second device as a player to the opposing team using private play and leaving 2 slots open on the opposing team. This cause imbalance to the other team so there team can win and bump up there rank. I have notice thissince sudenly one player doesnt move anymore yet he or she hasnt been "left the game" status or just running around andnot pretending to help but suddenly stops. Vainglory need to fix this buy not allowing private matches...