I have experience this before the vid around Nov. December and it appears they are spectators glitching the servers to allow them to use there weapons while going ANYWHERE in the map they choose... the camera allows you to go anywhere in the map while the game is going on.
these people really need to get a life! what's the point of playing online and cheating
they must suck so bad there never going to get good at the game.. IW needs to code a anti-cheat system. imo anyone caught cheating should get put back to rank 1 with like a month of not getting Xp.. it wouldnt be worth cheating then.