Go to see your doctor and find out what is causing the problem. It could be related to the hysterectomy or could be something totally unrelated. You need to know what you are dealing with medically before you worry about any legal action.
Hire an attorney in OR to help him work out the details so he does not have to sit in jail on the bench warrant. The sooner he takes care of this the easier it will be to expalin to the judge why he did not show. I would suggest that he get the confirmation from ADES as soon as possible.
Walmart is notoriously hard to deal with. They are self insured and have a claims management company dedicated to nothing but 'denying' claims.
It sounds like you may have a claim, but contact an attorney in your state to review all the facts of your claim. Make sure you get all the medical treatment you need. Even if Walmart was negligent in having excess water on the floor, you have to have enough damages 'medical cost' to justify a law suit. Also, slip and falls are difficult types of...
IF you put the right language in the motion, and IF you have evidence to support your motion, then maybe. It the cop had other ground to arrrest you, then he can search you for his safety and do an inventory search of the car if it will be impounded ot towed.
You did not provide enough information to give you any better answer, and you probably should not do so online anyways. Hire an attorney in your state to give you more advise.
I don't think this is the proper forum for your post like this. With that said, there are many great civil rights attorneys who have dedicated their lives to helping victims, and I understand your frustration but I am sure there are some in DC. As far as why the attorney and firms walk away, you will have to ask them.
Was your son on your insurance policy? If so then your insurance attorney should have taken care of this possibility in the release when the settlement occurred. Call your insurance attorney and get more details. This sounds like a negligent entrustment cause of action against you that was not raised in the first claim. If the relases from the settlement was not properly delt with, then you could be in a stciky situation, and you should also seek a private attorney to assist you with this...