If a trustee is also a beneficiary of the trust and conversion or failure to convert would enhance or diminish the beneficial interest of that trustee, or if possession or exercise of the conversion power by a particular trustee alone would cause any individual to be treated as owner of a part of the trust for federal income tax purposes or cause a part of the trust to be included in the gross estate of any individual for federal estate tax purposes, then that trustee may not participate as a trustee in the exercise of the conversion power, except that:
NMS § 46-3A-110