What's the glitch?
He explains it at the end.
Using sniper rifles as shot guns always pissed me off. (I think I even ranted over it in here..), mostly because it would be so god damn easy to fix, just like using the shotguns as sniper rifles, but for some reason DICE doesn't seem to want to.
Picking up enemy weapons to kill their teammates once your out of ammo is neat and simple trick though...
@disco: You don't even need a sticker, an overlay should be able to create a normal crosshair just fine.
Edit: Disco: A tank driving 100m is abandoning his engi but not necessarily his position