Third, most contracts required to be in writing may be rescinded orally. The new agreement is treated in effect as a modification of the old one, and since a complete rescission will not usually trigger any action the statute requires to be in writing, the rescission becomes effective in the absence of any signed memorandum.
Some agreements, however, may not be rescinded orally. Those that by their terms preclude oral rescission are an obvious class. Under the UCC, certain agreements for the sale of goods may not be orally rescinded, depending on the circumstances. For instance, if title has already passed to the buyer under a written agreement that satisfies the statute, the contract can be rescinded only by a writing. Contracts for the sale of land are another class of agreements that generally may not be orally rescinded. If title has already been transferred, or if there has been a material change of position in reliance on the contract, oral agreements to rescind are unenforceable. But a contract that remains wholly executory, even though enforceable because in writing, may be rescinded orally in most states.