You have been given good advice here. I don't believe they have a case either. However, I would not rely on what a bunch of strangers are telling you (myself included) on the internet. It is your situation and your career.
Seeking an attorney's advise is the smart thing to do. Fight fire with fire and let them do the work for you. It may cost you a few bucks, but well worth it in the long run.
Best of luck to you and keep us informed so others can learn.