1. As per sec 14(3) of the amended SARFAESI Act, DM's order can not be challenged. So, you have own the battle. Congratulations.
2. There is no scope for your approaching any Court since the DM's order has gone in your favour. Based on the said order you can file a Writ Petition before the High Court praying for setting aside the entire SARFAESI Action the Bank has initiated in connection with your property and now attempt to recover its dues by filing O.A. for selling the borrower's other properties.
3. The Bank shall have to file Original Application (O.A.) u/s19 of Recovery of Debts due to Banks and Financial Institution Act,1993 praying, inter alia, for direction upon the Borrower for disclosing his other assets both movable and immovable.
4. Since it has been implied by the DM's order that it was a bad mortgage created in favour of the Bank, you can now safely sell of the said property.
5. File a damage suit claiming the said damage and cost.
6. Negotiate with the Bank and ask them also to lodge a police complaint against its Borrower.
7. You shall not gain personally or legally by lodging such complaint in the particular matter. However, you can make the said complaint if you so desire.
8. Yes, the DM has put nails in to the coffin of the Bank's claim on your property.
9. Get the SARFAESI Action set aside by getting it declared that the Bank had taken a bad mortgage from the Borrower. It will permanently seal the matter in your favour.