I rarely even suspect cheats, but something about this guy 'theonlylawislove' tickled my brain. Switched to spectator and found what I think is pretty definitive evidence of a wallhack. Here is a short (0:52) video of a few of the more obvious moments: http://youtu.be/oKrzFiB8Da4.
His stats don't scream hacker, but his gameplay does. I'd appreciate someone taking a look into this.