You should retain a local attorney to review the letter and advise on how you should proceed. We can't read the letter here, and you should not...

Unless your husband has been judged legally incompetent, there is nothing you can do.

An unpleasant experience and horrible customer service. But not legally actionable IMO.

The DA will decide who gets charged and a judge or jury will determine whether they are guilty.

You need a defense attorney, and you need to quit posting relevant facts on an open Internet site.

Your lawyer has told you what you can do. But FWIW, based on these unique facts, I think this was a valid search.

Only the police can obtain search warrants.

As a general rule a store manager can detain an alleged shoplifter until the police arrive, even if they are wrong.

Maybe. Call some lawyers and ask them.....

You have not asked a question. Hire a lawyer to review the HOA covenants and see if there is anything you can do.