I'm sorry to hear about that. These are the sticky situations that we all dread : (
When you went to court, did you represent yourself or hire an attorney? It seems strange that someone who is clearly not guilty of committing the crime would be found guilty nonetheless...
This is definitely a task for an attorney. I don't know what they can do retroactively about the verdict but they would be the best place to start asking questions; if licensed Real Estate Professional were to advise you on this case it may be a conflict of interest; practicing law without a license.
Best of Luck to You! The Just always prevail! : )