Sometimes the second will release the lien if you sign a personal loan for the difference. Have you explored this avenue? Seconds for some reason are getting harder to get total forgiveness from. Could be something about getting cash out on the second and then the lender forgiving all the debt.

Twes,

Ask your agent to negotiate with the second. Unfortunately, without second approval, you can close the deal. May be offer little bit higher than the orginial and ask first to give to the second. Even they know that without 2nd approval they cannot close this transaction. Your agent can help you to negotiate with both lenders...