We have to remember, though... he can always say this is what Casey told him some time back, and that he believes her. I'm sure that if one wanted to google some other cases, they could find ones where both defense and prosecution have said things just as bad, so I don't think he will be disbarred for his OS... however, he should be careful from here on out to show more respect for the judge. I think JP is beginning to lose his patience with him, when he keeps asking a question after the objection has been sustained, and for blatantly telling JP that he thinks he was wrong for not allowing that line of questioning. I'm surprised he hasn't been fined with contempt of court.
As for the A's, I don't think the state is going to go after them for obstruction. After all, Casey is their daughter and they really believed at the time that she was being railroaded. They believed the kidnapping story, and Cindy said she didn't stop looking for Zanny till 6 weeks ago. I believe the state knows that they have been through their worst nightmare and that losing Caylee was bad enough, now realizing their daughter could get the DP will make it worse. I really don't believe they would add to their grief. Everything they did can be explained if you really think about it. And people say a lot of crazy things when they're going through something like that. I might be a whole lot worse if it was my child and grandchild.
The others I don't know about and don't really care.