Joining the dogpile to get a lawyer. Your degree is at stake, and this isn't the sort of issue that will burn up your money if you don't want it to. Go in for a consultation and see what they think. Bring all correspondence. Worst case scenario you pay him for a few hours after he has some answers for you.

An attorney kept me from making some very expensive (honest) mistakes and payed for himself many times over. Don't gamble with your future.