Section 9:4254 - Failure or impossibility to actA. If an arbitrator becomes de jure or de facto unable to perform his functions or for other reasons fails to act without undue delay, his mandate terminates if he withdraws from his office or if the parties agree on the termination. Otherwise, if a controversy remains concerning any of these grounds, any party may request the court to decide on the termination of the mandate, which decision shall be subject to no appeal.B. If, in accordance with this Section or R.S. 9:4253(B), an arbitrator withdraws from his office or a party agrees to the termination of the mandate of an arbitrator, this does not imply acceptance of the validity of any ground referred to in accordance with this Section or R.S. 9:4252(B).