No, the jurors had to fill out a questionnaire before they even went through jury selection. There was a question that specifically asked about sexual abuse, whether the potential juror or any member of their family had every been abused or assaulted. The one juror I read about was very vague about how he answered, alleging he didn’t really remember the question.
And while this looks like a slam-dunk mistrial, you can be sure the government is going to do everything they can to make the verdict stick. They don't want another trial, and after a conviction on this many counts, they can't just simply choose no to retry the case.