Texas Estates Code - EST § 1203.002. Immediate Acceptance of Resignation;  Discharge and Release

(a) If the necessity exists, the court may immediately accept the resignation of a guardian and appoint a successor guardian as provided by Section 1203.102(b).

(b) The court may not discharge a person resigning as guardian of the estate whose resignation is accepted under Subsection (a), or release the person or the sureties on the person's bond, until a final order has been issued, or a final judgment has been rendered, on the final account required under Section 1203.001.