The evidentiary hearing was called Friday after it was discovered juror Candy Chiles lied during jury selection when she said she didn't have any criminal convictions.
She pleaded guilty in the 1990s to drug possession and in 2008 to DUI.
Cellini's attorneys are seeking a new trial, saying Chiles should have been disqualified from jury service.
Chiles told the judge she doesn't know why she didn't give accurate answers to questions about her convictions.
Chiles and defense attorney Dan Webb frequently clashed during the hearing. At one point she stormed from the courtroom yelling, "Leave me alone!"
Cellini was convicted Nov. 1 of trying to shake down a Hollywood producer for a campaign donation.