[GAMEPLAY] Player or Summoner Bug

[IMG]http://i57.tinypic.com/2cqea2h.jpg[/IMG] Im redoing my previous post because i forgot to include the [GAMEPLAY] tag. After we finished the game, one of the players was being rude and saying that team was bad and stuff. Upon looking at his names and looking to see which champ he played his name was not one of the players in our game. I've spectated before and i know you can't type in chat even after the game. Also if you look up his summoner name it is not found. Which is kinda spooky.