Fannie Mae will make exceptions to people on total disability in allowing a short sale. You'll have to wait 2 to 3 years to buy again though. Here are some other options:
Lease purchase the house to the current renter and have them pick up the full amount. You'll want to have the buyer open a trust in his/her name and transfer title to the trust naming the buyer as the beneficiary of the trust. This will ensure the buyer gets a tax write off. Then, have the payments made to a 3rd party company. You will be on the loan for 12 months after which the buyer will then refinance the property (after credit is cleaned up) and remove you from the loan. They will then take the house from you. No short sale, no foreclosure, no closings etc. I know someone well versed in this process that I can refer you to.
Deed in lieu of foreclosure. Contact the bank and ask them to take the title back. Not an easy process.... more