It is not clear from your posting whether the forged deed was delivered or recorded. There are many issues in your question that cannot be resolved on line. You should contact an experienced real estate lawyer in your area about these issues.
Disclaimer: This answer is provided for informational purposes only, does not constitute legal advice, and does not create an attorney-client relationship. Actual legal advice can only be provided after completing a comprehensive consultation in which all of the relevant facts are discussed and reviewed.