Well think about it really. Since this trial is televised on all channels and the internet, even if they were barred from court they would still be able to see everything going on in court from their laptop. I’m sure that’s where the Zimmerman’s are watching it.
By court order, Zimmerman's who are named as witnesses are sequestered. If they are watching the proceedings, or reading about them, etc., they are in violation of a court order.
Same goes for Crump.