Help, creative financing possible?

[Scarlet Watson]

I have a contract on my home with the buyer putting 25% down. It is currently in escrow with my real estate lawyer. I have an equity loan on the home at 75% of the appraised value of the home. Yesterday I was presented with a bit of a dilemma. Buyers are saying that they do not qualify through their lender for the remaining amount to be mortgaged. Not sure where to go from here. No realtors are involved, only each side being represented by real estate lawyers. Both sides anxious to close and get on with life.