Y'know its up to him. if the party agrees on a compromise or not. Don't take it public, talk to him.
Taking it to public (internet), you are forcing him to take a nuclear approach. which is bad for both sides.
(that's why he didn't disclose your names in the first place, because he knows there is a chance the parties involved can repay the debt).
Note:I dont know what you folks agreed upon. but try to work it out in a civilized manner.
I sound like a person who (nakikisawsaw sa problema ng iba)