"An unenforceable, unauthorized judicial decision is still an abomination regardless of whether the intent is good or not."
First, the decision is not unauthorized, it was authorized by the presiding judge. Second, are you saying that, having been told, no sex, if the girl is found to have had sex that action against her is unenforceable? Appears to me she would be charged..probation revoked, etc., thereby making it 'enforceable'
They can't even stop people in jail from having sex - they're going to stop an amoral 17-year-old? It's not realistic.
Moreover, I don't think there is any statute authorizing a judge to impose "no sex" conditions. Furthermore, the courts themselves have clearly stated that legislatures cannot legislate in that manner (Lawrence v. Texas). So if Congress is not authorized to pass such a law, then a judge is not authorized to impose that condition.