Free: Contests & Raffles.
Unless he can find evidence of an easement, he's going to be out $585. It sucks but throwing it out without that evidence endangers landowner rights. I hope he wins.
http://legal-dictionary.thefreedictionary.com/prescriptive+easementprescriptive easementn. an easement upon another's real property acquired by continued use without permission of the owner for a period provided by state law to establish the easement. The problems with prescriptive easements are that they do not show up on title reports, and the exact location and/or use of the easement is not always clear and occasionally moves by practice or erosion. (See: prescription, easement)