It should be pretty straight forward. You have 2 pieces of evidence that say you didnt sign (your testimony, and an FBI handwriting expert).
As far as defrauding by tranfering the house, if you didnt sign the note, you didnt have any obligation not to transfer it. I assume they are saying you transferred it OUT of your name in order to avoid attachment
Attorney
Experience as general attorney, in house counsel, SSDI, Family Law attorney, and law professor