Sounds like you have a smoking gun here. Get an attorney and make a motion that your former attorney recuse himself and terminate the representation. File a complaint with your state's bar association. Look at Rule 1.9 in the GA Code of Professional Conduct (link below) regarding "Duties owed to Former Clients". You should also find a complaint form and address to contact by poking around that site or using Google.
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It would certainly seem to be a conflict of interest. I would recommend talking to a lawyer to fully understand your rights.
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If the facts are as you state them, there likely is a conflict. You need to do two things - (1) get a lawyer (and you needed one yesterday), and (2) contact the state bar of Georgia's general counsel as to a possible disciplinary matter about the lawyer (call them Monday).
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