It's more likely that during interviews it became clear that the jurors knew about nullification and they were excluded from the pool for that reason. It then probably dwindled the size of the pool enough that the Judge became concerned about being able to find jurors that are unaware of nullification.
The Jury selection process, from what I understand, tries to exclude anyone that might know about nullification specifically because they don't like the Jury having more social power than the Judge.
The Jury selection process, from what I understand, tries to exclude anyone that might know about nullification specifically because they don't like the Jury having more social power than the Judge.