I was enigma and from the beginning of the game i was "alone". All my allies were at fountain, i didnt see any enemies. I still could talk to them and saw their pinging. One guy in my team had been desynced before aswell and he recommended me to push till end and we get xp. So i did.
The game ended and we won, they were playing their game during the time i was solo playing.
It was something like begin a ghost i reckon.
They couldnt see me, bot could communicate with me. I didnt have any effect (other than me destroying the throne ended the game)on their game(they were like playing in a different dimension or smth) and they didnt have any effect on my game.
So they basically played 4v5 against scourge. And i was playing 1v0 against creeps. All they had to do was wait and hold on until i finish the game