In what circumstances will a court deny a motion for a new trial because of juror misconduct?

In People v. Ybarra (2008) 166 Cal.App.4th 1069 [83 Cal.Rptr.3d 340], the Court of Appeal affirmed the denial of a new trial motion based on juror misconduct where a juror testified that "after initial balloting showed nine votes for conviction and three votes (including hers) for acquittal a majority juror said the minority jurors were playing `the devil's advocate,' which to her `was like the devil's helper' .... She characterized the deliberations as `intense' and the majority jurors and herself alike as `mad.' She described the tone of the majority jurors as `"Hurry up and just say yes"' and the response of the minority jurors as acquiescence `little by little' in the will of the majority jurors. She said she `wanted to get out of it' but said nothing after a

[170 Cal.App.4th 827]