A contractor was hired to take out a huge stump and build a garage. He had to pay $2000 to rent machines to remove the stump and bought lumber for the garage. When the tree was out the homeowner 'changed his mind' about the garage and demanded money, saying you can keep the lumber. The money was spent so could not be refunded. The homeowner put a lien on the contractor's property. How can this be contested and removed? The homeowner wanted to be paid to have the tree stump removed, it appears.