Just take a razor blade and carefully rotate it all the way around the diameter of the wire, cutting a groove. Make sure you use something razor sharp though. And don't cut your finger half off like I did.
yes, a razor would work, or if you have strippers that have cutters on them to, most do, just rotate it in that and it will do the trick. also they make cutters for that type of stuff, they are made to cut battery cable. very wierd looking.