Okla. Stat. tit. 60, § 60-1607.5: Resignation of trustee

A. A trustee may resign:

1. Upon at least thirty (30) days' notice to the qualified

beneficiaries, the settlor, if living, and all co-trustees; or

2. With the approval of the court.

B. In approving a resignation, the court may issue orders and

impose conditions reasonably necessary for the protection of the

trust property.

C. Any liability of a resigning trustee or of any sureties on

the trustee's bond for acts or omissions of the trustee is not

discharged or affected by the trustee's resignation, but may be

discharged by court order upon notice to the qualified

beneficiaries, the settlor, if living, and all co-trustees.