Okla. Stat. tit. 58, § 58-231: Resignation and settlement - Revoking letters

Any executor or administrator may, at any time, by writing,

filed in the district court, resign his appointment, having first

settled his account and delivered up all the estate to the person

whom the court shall appoint to receive the same. If, however, by

reason of any delays in such settlement and delivering up of the

estate, or for any other cause, the circumstances of the estate or

the rights of those interested therein require it, the court may at

any time before the settlement of accounts and delivering up of the

estate is completed, revoke the letters of such executor or

administrator, and appoint in his stead an administrator, either

special or general, in the same manner as directed in relation to

original letters of administration. The liability of the outgoing

executor or administrator, or of the sureties on his bond, shall not

be in any manner discharged, released or affected by such

appointment or resignation.