The trust is a revocable trust. Mr. Smith deeded the property to a trust ten years ago. Last week he deeded the property to Mr. Jones. He could do this because the trust was a revocable trust. It is a principle of law, it is that simple to revoke a trust.
People do it every day when they sell a conveyance based on a security.
The grantor can revoke a grant by his successive conveyance as an operation of law, automatically. Therefore, why do people run down and file recessions of signatures, revocations, affidavits stating it's not my signature etc. It is not necessary if you just take the monuments of title and create a new monument of title to a new holder, or holder in due course. Then give the old holder notice of the successive grant and conveyance. Write a new title.