I understand that he's put you in a financial bind, and that he "should" feel the need to pay his debts fairly.
But - please understand this is coming from a Moms view - I can't say I agree with presenting 'his" debts to the parents, unless "they" had agreed prior to backing him.
This is not their responsibility, it is his. Bailing him out, even if it would help you who have been taken advantage of, would only open the door to more of his irresponsible behavior.
Think of it this way...if I came on here with the question "should I pay it?" there would be a flood of responses saying "no way, no how!"
This...according to the official anti-codie/enabler handbook chapter 8, pragraph 7.4
I'm glad things are coming together for you
(((Hugs)))
Cece