Nope, he literally switched between the sniper and shotgun without ever dropping any of them whilst having the riot shield stay on his back. Im talking about modders, they do the impossible possible. Also one of the had infinite life or something i sprayed all 26 pistol shots into the guy stealing my care package reloaded and killed his buddy with only 5 shots.
Well in the 12+ minutes since your first post, I have seen no evidence of any of these hacks on multiple forums available on the 360. Any links found on forums, youtube videos, etc. All links found were virus scanned and confirmed to be Trojans and Keyloggers.
He probably picked it up off the ground, with Fast Hands, it would have been picked up and looked like a switch.
EDIT: got video proof?
The Self-Proclaimed Master Bard of the Xbox Black Ops 2 Boards. Pope of the Church of MK 48