When I watched the beginning of the demo in slow-motion there could be some snaps, but the rest looks clean. Also reminded me a bit of wallhack, cause sometimes (but not always) he knew really good where an enemy could be... On the other hand he has some skills (no bad movement, knows the map), so I'm unsure for now. His ping looks unstable, this might explain some things.
Funny thing: At 5:30 the red player is thrown really high through the air by the nade explosion
Looks funny and like in a bad action movie (or "A-Team" episode).