It's an exploit, thats why it doesn't exist in the PC version. Its cheating indefinitely, if Crytek has money to put towards Crysis 2 to patch the game they would patch this game breaker. Instead they are just going to make it so it doesn't happen in Crysis 3. Already talked to Cry-Tom about it

The point I'm trying to make here is, if it's in the game then it's not cheating right Conan? Right Manstee? So yeah this guy in the youtube video is clearly not cheating then. lol
See how I got you there?