Robert gives a long answer about whether GZ will take the stand. It sounds like he thinks GZ doesn't have to take the stand because the state won't have met its burden by the end of its case, and GZ will have "already testified" by virtue of his statements and interviews with police.
It sounds like he's implying he thinks GZ should not testify and O'Mara hasn't yet decided. But the decision will be based on whether they think the state has proved the charges, since they have no burden to prove anything.
He will not be tweeting once the jury is selected.
