Whenever you find that a player seems suspicious just call for a Screenshare. A Screenshare is the method MSCL refs use to find out if a player is cheating in the game. (Via Skype/Join.Me). Whenever a Screenshare is called upon it is heavily recommended to get a ref that knows how to SS and/or the managers of the league, MSCL Director, or even the Global Director. However if the case is ever to happen punishments can be made if somebody who wasn't mentioned above brings up strong detailed evidence to get the player blacklisted.