Tennessee Code Title 66. Property § 66-25-107

Notwithstanding any other provision of this code, any mortgage, deed of trust, deed, or other instrument securing a debt, may be released or modified by the legal holder of the debt secured thereby without the necessity of execution of the release instrument, marginal release, or modification instrument or joinder therein by the trustee under a deed of trust or by other party holding legal title similar to that of the trustee under a deed of trust.