Settlor’s powers; powers of withdrawal.

(a) While a trust is revocable, rights of the beneficiaries are subject to the control of, and the duties of the trustee are owed exclusively to, the settlor. (b) While a trust is not revocable, for so long as a person has a currently exercisable power of withdrawal over the entire principal of the trust, the duties of a trustee are owed exclusively to such person. (c) While a trust is revocable and a settlor does not have the capacity to revoke the trust, a beneficiary shall have the right to enforce the settlor’s intent to benefit the beneficiary during the settlor’s incapacity. (d) While a trust is revocable, the trustee may follow a direction of the settlor that is contrary to the terms of the trust.