Yes. He should not talk with anyone unless and until he is represented by an experienced criminal defense attorney. This type of case is extremely sensitive. The authorities use multiple methods to weaken the accused person's rights.
ASAP is the watchword for obtaining an experienced criminal defense attorney.
If you are concerned with the person pressing charges consider ceasing all Internet communication with him/her.
Please consider a few random thoughts on Internet communication.
The Internet is not a private but rather is a public forum. Verification of who you are communicating with on the Internet is impossible. If a communication sounds to good to be true, it probably is. Emails, tweets, pics, etc. live potentially forever. Attempts to delete or erase or "take back" any communication is...
Asking, "Is the charge valid?", is not an easy question. I suggest that a better question is, "What can be done to protect your rights as charged?"
This is yet another example that what appears to be a relatively simple question is not simple to answer unless ALL the facts and an actual (not a paraphrasing) review of the court record is conducted by an experienced federal criminal defense attorney.
The first part of a complete analysts is reviewing the government's investigation....
Whether he was charged with felonies or misdemeanors will determine the sentencing range available to the judge. Misdemeanors are punishable up to one year, 364 days in county jail. Felonies are punishable to one year or more in the Illinois Department of Corrections, IDOC. The charges may also be probationable. Many other factors must be considered to answer your question with an answer it deserves.
Consult and retain an experienced criminal defense attorney ASAP.
Discovery is an essential part of case analysis. Without an understanding of all the nuances of discovery and application to your specific case your attorney can not advise you of your options and strategies.
I suggest you seek a second opinion ASAP.
Your situation is quite unusual. A creative and experienced attorney after a review of all the transcripts and the law may have a unique approach. However, I do not want to give you false hope. The direct answer is nothing can be done. Sorry.
The context and application of your question will govern the answer. Many other factors must be considered to answer your question with an answer it deserves. The definition of "violent" is set by a statute as interpreted by the judge and as refined by case Laws.