If you have settled on trying to pull the wire out, don't cut if off even with the ground, you need something to attach to. And most important, wait until the spring thaw is about over, the ground is softest and if the wire can be pulled, this is when it can be. As to what to use, a winch is probably the best. If you don't have a winch, a font end loader is probably a good choice. One of my friends has a fairly large CAT and last spring we were pulling out tree stumps up to about a foot with it and a long chain.