This question has been addressed in 1 Texas court opinion:
COA13 — February 5, 2026
In an insurance appraisal dispute, a trial court struck a contractually appointed neutral umpire and unilaterally appointed a replacement based on the homeowner's claim of bias. The evidence of bias was solely a prior order from an unrelated case where another judge had set aside one of the umpire's awards. The Thirteenth Court of Appeals held that the trial court abused its discretion, concluding that 'prior bad acts' in unrelated matters do not meet the high evidentiary bar for 'evident partiality.' The court emphasized that specific evidence of bias in the current proceeding is required and that trial courts cannot ignore contractually mandated selection processes when appointing replacements.
Litigation Takeaway
“Parties cannot disqualify a court-appointed professional—such as a custody evaluator or receiver—based on vague reputations or prior adverse rulings in unrelated cases; disqualification requires specific, admissible proof of bias or partiality within the current litigation.”