I am a real estate agent and a loan officer for a bank and have extensive understanding of all types of mortgage prodect that are available. I'll be happy to discuss this further with you to see if I can give you any further guidance on this matter.
I am available tomorrow at 888-762-1554 from 7AM to 9AM and from 12:30PM to 10PM, and anytime monday from 7AM to 10PM, if you would like to discuss this in more detail. I'll be happy to help point you in the right direction.
Values have come down dramatically since 2006. Your uncle's property is what is called upside down in value. Such a property could only be sold in a short sale. May be there are exceptions I haven't heard of but from what I know the sale has to be an armslength transaction meaning nobody in the family including the borrower's bloodline can purchase it.