the guy sounds very dangerous. yes, you should consider consulting with a local attorney about this matter. if you are concerned you may be charged criminally with an assault on the child then i suggest a criminal defense attorney
i also think you should explain the comments made on the facebook page as they appear to be borderline defamatory - the thing is you already apologized so he is only posting the facts as he understands them to be - so it is something you would want to discuss
also, if he laid his hands on you with an intent to harm you, you can also file criminal charges against him by filing a police report about the incident.
again, at this time a criminal defense attorney would be your best bet
DISCLAIMER: Answers from Experts on JustAnswer are not substitutes for the advice of an attorney. JustAnswer is a public forum and questions and responses are not private or confidential or protected by the attorney-client privilege. The Expert above is not your attorney, and the response above is not legal advice. You should not read this response to propose specific action or address specific circumstances, but only to give you a sense of general principles of law that might affect the situation you describe. Application of these general principles to particular circumstances must be done by a lawyer who has spoken with you in confidence, learned all relevant information, and explored various options. Before acting on these general principles, you should hire a lawyer licensed to practice law in the jurisdiction to which your question pertains.
The responses above are from individual Experts, not JustAnswer. The site and services are provided “as is”. To view the verified credential of an Expert, click on the “Verified” symbol in the Expert’s profile. This site is not for emergency questions which should be directed immediately by telephone or in-person to qualified professionals. Please carefully read the Terms of Service (last updated February 8, 2012).