I hadn't heard of this hack either yet....
Side note: not too long ago I was playing CTF, and the flagcarrier used such an exploit (which made him easy to spot, kick and ban
) but still I don't know how he did that.
He was in the AXIS base of Inshallah Valley , Desert Combat, CTF, central building, central room. I don't have screenshots sadly, but clearly such exploits still exist. And yes, for me Punk Buster was enabled.