How do I resolve this?

Start by contacting your insurance company. You may also need a criminal attorney.

Do I need my own attorney?

Your insurance has a duty to represent you and to settle the case within policy limits so as to protect you from an excess judgment, if at all...

Can i file cease & desist to son for writing a fraudulent witness stmt to assist a squatter who broke in my home & stole my ID

No, not really. This is very hard to follow because of your abbreviations, but this sounds like a personal, not a legal issue.

PI case fired in LA Court 2012; In Pro Per,settlement reached outside Court 4/2013; signed a release term stipulating settlement

Your best move is to get a release of interest from your health providers. Why isn't the USAA lawyer or adjuster trying to do that, otherwise?

The best thing to do is take this question to your lawyer and ask what he thinks the effect of further treatment will have on your case. If you...

I don't think every single med mal lawyer would say no to the case. Do some work and look around.

Should I contact witness?

Turn both witness' information over to your ins. co. or the PI lawyer YOU NEED TO HIRE if you're injured.

I was involved in an accident on 1-23-11, I filed a claim with the insurance co. right away

Generally speaking, you're cooked. If they didn't provide you with proper notice of the SOL, however, you at least have a chance. Make an...

This is a tough situation. You need to bring all of the documentation you have to a consultation with a PI lawyer and see if they can help you. 11...

This question cannot be answered until we know the date the injury took place.