This is not a criminal defense question. Law enforcement is likely to view this as a civil matter, especially if your "buy out" addressed the missing funds. You need to consult a civil litigator about the cost associated with suing him. That is a consult that probably should have taken place before you signed whatever you signed, as that document may impact your ability to go after him. Assuming you can get over that hurdle, you need to assess how collectible any judgment you might receive against him will be, as absent assets from which you can collect, a judgment might turn out to be little more than an expensive piece of paper. Good luck.
This answer is provided for general information only. No legal advice can be given without a consult as to the specifics of the case.
I agree with Attorney Witt. Start by consulting with a local business law attorney to see if the agreement you signed limits your right to sue your “ex” partner.
DISCLAIMER: David J. McCormick is licensed to practice law in the State of Wisconsin and this answer is being provided for informational purposes only because the laws of your jurisdiction may differ. This answer based on general legal principles and is not intended for the purpose of providing specific legal advice or opinions. Under no circumstances does this answer constitute the establishment of an attorney-client relationship.
There are a whole host of problems with your question. First among them is: are you going to be able to finish the contracts? If not you could be looking at contractor theft issues. If so then you may have a claim against your former partner, however, without seeing what you signed it is impossible to tell. You should consult with an attorney immediately and have all of the documents available for the attorneys' review.
I am licensed in Illinois and Wisconsin only I can not give advise in any other state. Any responses posted on Avvo do not constitute a contract and no attorney client relationship is created. Any answers given are based only upon the information provided and are not to be considered legal advice.
Sorry to hear about your situation. There are several good lawyers in Green Bay that I am sure good help you understand what rights and remedies you may have. Please feel free to contact me if you would like a referral.
One thing to keep in mind is the old adage--don't throw good money after bad. Sometimes the best advice is to take the loss and chalk it up to experience rather than spend more money trying to chase after a claim. Unless you are sure your ex-partner has some assets, it simply may not be worth pursuing.
Best of luck.