"The problem is that the facts of the case are confidential. There is much that I am not at liberty to divulge."
Ok. This sends up a red flag for me. Sure, the government may not be allowed to give out confidential info, but that doesn't mean the family, or you with their permission, couldn't give out whatever information that they wanted that would lend support to their case.
Such as? The "accuser" is a minor who was sitting the other two kids. She told her mom about his room and the mother called it in. The boy has bladder control problems among other things. The police came, checked out the house, and left. The warrant from CPS came a week later without either the sitter, the mother, or CPS ever having met the child.
The standard procedure is for CPS to go to the school and interview the child without the parent's permission. Because Mark's wife homeschools the kids they did not have access.
Mark called the Home School Legal Defense Association, to which he belongs. They recommended that Mark NOT surrender his kids and get an attorney. He did. The attorney he got has been a thorn in CPS' side.
The attorney removed the wife and kids into hiding. Even Mark does not know where they are.
That's much as I can tell you.