Well, I had to do that on my truck. I first used a tow strap tied to a utility pole....the strap broke, and so will your rope.
I thin moved to a chain and wrapped it around a very large cement and steel reinforced pole. Soaked it with wd40 and did a little 1 foot, on the gas yanking. Did that for about 30 minutes. Then started doing that with someone using a hammer. Eventually it came out. I think your best bet is a chain, a large hammer and when its wrapped around the pole, sit in it with your foor on the gas at like 2000 rpm roughyl so it has a bit of pressure pulling on it.