Counter-Strike hitboxes gone wrong

Just before you recall memories of accusing a mess of people for haxoring all over your Counter-Strike: Source, Florian from Kotaku found this video that shows that there seemed to be a glitch in the Matrix. Makes me kinda sick to see stuff like this because I always liked to believe there was some basic level of integrity in my first-person shooter.So what do you all think of stuff like this? Game breaking bs or just a necessary evil (apparently it helped with potential lag)?

Robert Summa