Have you contacted your homeowners insurance agent? While you are getting a lot of great advice, only your agent can tell you what you should do in this situation. If you do not already have a lawyer, I would ask your agent to recommend one for you. I would not do anything to assist in removing the jeep, or anything to make sure it remains there. It is not your jeep, and it wouldn't be out of the question to get into trouble doing something that could be interpreted as interfering with law enforcement. Sometimes it's better to suck it up and live with the hand that's been dealt, then to make it worse.
Eddie