Okla. Stat. tit. 60, § 60-1212: Cotrustee relief from liability

The terms of a trust may relieve a cotrustee from duty and

liability with respect to another cotrustee's exercise or

nonexercise of a power of the other cotrustee to the same extent

that in a directed trust a directed trustee is relieved from duty

and liability with respect to a trust director's power of direction

under Sections 10 through 12 of this act.