If you'd like to stay in the property, this would be your best option. Have you been communicating directly with the loss and mitigation department? If so, they should have a fax number to send this paperwork directly to the lender. Let me know if I can be of assistance to you.
Century 21 Diversified
The other suggestion is that if they determine that you cannot afford the property then their second RECOMMENDATION would be that of a short sale. Here is a link to their site. Good Luck!
Another link may help, this is a FREE 1 hour video for other options