Is Wells Fargo the original lender? Usually HARP is easiest through the original lender, because they don't have to meet the same lending standards a new lender does.
However, what I see here is an alligator that is a problem for everyone. First, your aunt was probably taking a mortgage interest write off to which she was not entitled but was part of the deal you made with her. I'm sure she's not happy about losing that. Second, it sounds like you owe a total of $153,000 on the condo - $123,000 to the bank and $30,000 to your aunt and uncle. That's for a condo that's worth $80,000.
Mortgage principal relief under the banks' settlement agreement is for owner-occupants only. I would be talking to the aunt and uncle about what to do with this property. Maybe they can refinance with HARP under their names and you can sign a promissory note for the $30,000. If that gets them cash flow neutral, maybe you can deed off the property and they can wait for the market to recover.