Although the allegation seems silly, you should have an attorney present to make sure that your perspective gets heard by the judge. The pre-warrant hearing is a chance for both sides to speak to the court and then the judge decides whether to issue a warrant and have you arrested right then. An attorney can investigate, speak to witness, subpoena witnesses and evidence, and give you the best chance at the hearing.
The best thing to do, if your son has not already been charged with the crime is to hire an attorney who can investigate the case and perhaps persuade the police that what he is saying is true. If he has already been charged, then he will need a vigorous defense to these very serious charges. If you would like, I would be glad to speak with you by phone or in person, at no charge, about what can be done to defend your son.
This is a complicated question and cannot be answered definitively without a full consultation. However, generally the longer one is held in jail without trial, the stronger the motion to dismiss for violation of speedy trial rights may be. There are many factors that effect this so it is not a simple matter of showing that you have been detained a year. You should consult an attorney as soon as possible to help with both your motion to dismiss and the appeal if the motion is denied.
It is always possible that the prosecutor could elect to drop the charges. However, they typically do not. Your attorney has to do the legwork and present the issue correctly in order to have a chance at getting the charges dropped.
It depends on what county you are in. In metro Atlanta it wouldn't be unusual to take many years. It doesn't necessarily indicate one way or the other whether your attorney is "working hard enough" as they do not control the court's calendar. However, if you are concerned, you should contact your lawyer and discuss the status and your concerns over the progress of the case.
Yes. A dead docket order does not terminate a case. The state could bring it back if it wanted to. However, even if it had been dismissed in the state court, the federal government could prosecute you.
A motion for new trial may be the quickest route to address the question; however, this is usually done before the trial judge. If the law is clear on the point and the facts are in your favor, this may be the route to take. More information is needed to make a determination about whether you have a good motion or not. You should contact an attorney immediately because the remedies available are all time limited.