[ Law & Ethics ] Open Question : One hour before closing I signed an addendum to remove tires from the property. There were about 6 to 8tires t?

One hour before closing I signed an addendum to remove tires from the property. There were about 6 to 8tires that I had removed. Mysteriously, about 30 tires have appeared on the property. Am I responsible for their removal? I have witnesses that can state they were not on the property on settlement day.