You generally cannot get your name removed from a co-signed loan (unless it is a rare contract that removes the co-signer's obligation after x years of good payments). If you could, the contract would be meaningless. Your best bet is probably to contact your divorce lawyer and push your ex via the threat of contempt.
Hopefully your wife is OK and the other driver will face the music for driving without insurance. Hopefully YOU had insurance and you should contact your insurer. You should immediately see a GOOD personal injury lawyer in your area. In metro Atlanta, or closer to you in Decatur, there are many good ones. You can search on this page, but always follow up with a google search of the lawyers or firm. What you should not do is post your personal information and phone number on websites like...
You won't find that help because it is not appropriate. The remedy for losing a court case is to appeal based on purported errors. Trying to come up with class actions or other desperate measures to change the law makes no sense at all, and is not a way to get more and more chances for a lawsuit that was lost. If you want to change laws, contact your state representatives.
The creditor would have started a repo because of the missed payments, so blaming your lawyer (even if the reaff was not filed) is not likely justified. Had you reaffirmed and the car been repo'd, you would owe the balance of the loan and have no car. The lender has a choice - there is no legal reason they can't work with you. They may choose not to, but again, it is because you missed payments.
Anyone can sue for anything. You need to see a very good PI lawyer (not ones who solicit or have TV advertisements during Judge Judy). Part of the discussion will no doubt be what you did that led to being tased 7 times.