Both parties have to stipulate to the commissioner in writing. If you found this helpful and/or the best answer, please let the attorney know and check the box on the bottom indicating so. Thank you and best of luck.
Please note that this answer does not constitute legal advice, and should not be relied on, as each situation is fact specific, and it is not possible to evaluate a legal problem without a comprehensive consultation and review of all the facts and court pleadings filed in the case. This answer does not create an attorney-client relationship.
It is unlikely that you "filed" a stipulation. More likely you stood in line at the clerk's desk on the first day of appearing in that courtroom and signed in as directed -- and probably signed then stip then. If you signed a stip under any set of circumstances it will be nearly impossible to obtain relief now from that stip. More critically, there are strong and compelling downsides to trying to get away from a commissioner who has been assigned a case and conducted any extent of proceedings, even a single 5-minute housekeeping matter. This is a situation where, if you are not absolutely certain of success (and you should NOT be certain of succeeding, based on what you have summarized in your post here), then it is incredibly unwise to make the effort. If you touch the king, be sure to kill him is the old metaphorical adage. Nothing is worse than being before a judicial officer who resents the fact that you tried to cause him/her to be removed. That makes for a long season in front of a court with an even longer memory.
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