If it's like our courtroom, the deputy / bailiff is watching, the fact that Kyle isn't in cuffs, isn't in bindings shows that no one in the court fears him. Which is AMAZING to say, this kid is on trial for killing 2 and wounding another and no one in there fears him. At one point the deputy goes to walk him to another room and Kyle just stops, turns around and walks back to the Defense table due to someone talking to him and the deputy just kept walking. I think everyone there knows he is innocent...but can't comment on it.
Put it in context, we had a kid younger than Kyle, kill no one. We had him in full shackles. He made it clear, he would kill if he was given the chance.