Can this be done ?, Please help me !!

got a situation… My brother is on the deed on a property. He is not in the mortgage. I helped the homeowner to take on the first mortgage and the Heloc he has. I notified both liens holders I am care of the homeowner. Now the homeowner is gone. I guess he left the country. Both Mortgages are current. I want to refinance the property at existing current value, how could I convince the first lien holder that the homeowner is not longer in the picture, without telling them my brother is on the title. Also, I want to get rid off of the HELOC and they don’t want to short sale…

Please help me, I need to help my brother.

Your reply will be so much appreciate.