You should have reported your husband back when the kids were being abused; to do otherwise could conceivably place you in a position to also be criminally liable as not only an accessory to the crime but also a principal to the acts based on your knowledge. If the kids are having behavior issues, they very well could be latent memories coming back causing the trauma now and there may not be a statute of limitations. You should each consult with separate criminal law attorneys and consider placing your children with a children's advocacy center for counseling.  The fact he stopped abusing is helpful but it may not completely absolve him of his liability.