How do I collect an arbitration award from a corrupt attorney who claims that he might go bankrupt or leave the country?

I was at one time represented by an attorney who turned out to be quite unethical, greatly overcharging me for various tasks. We went through binding arbitration and I was to be awarded everything I requested, about $10k. He subsequently filed a Petition against me, claiming the Arbitrator was very biased and exhibited professional misconducted during the hearing (untrue, but the only narrow grounds upon which he could potentially avoid paying, given that the arbitration was binding).

I subsequently spent about $3k in legal and filing fees (consulting with another attorney to file a Response to the Petition). Several attorneys with whom I have spoken say that I will probably win my case since his arguments are poor and he has no proof of misconduct or bias on the Arbitrator's part. However, going to court would incur additional fees, especially if I retain my consulting attorney and cease to be Pro se.

I have suggested to the corrupt attorney that we settle (requesting as much as possible of the $13k award + legal fees), but he has offered only about $3k, claiming that he has no money with which to pay his bills and might go bankrupt, especially if he is temporarily suspended from practicing law (there is a serious pending case against him in the State Bar -- he has done other corrupt things). He also says he might leave the USA, going back to his original country.

I don't believe that he is so destitute (he is an incessant liar), but I can't prove it. Moreover, he rents a house and leases a car, so he has no clear assets, at least not to my knowledge. I've asked for his bank statements but he has not sent them.

I feel like I'm being bullied; he can battle me at almost no cost other than his time, but the same is not the case for me as I know nothing about the law. I would like to get my money back, and also help bring him down, as I am a man of principle --- but I don't want to continue spending a lot of my own time, money, and emotions on this situation.

So with this background, here are my specific questions:

1) Is there any legal way I can find out his financial situation without spending money on detectives, etc.?

2) Should I just settle for $3k and chalk it up to a life experience? (I could still file a complaint to the State Bar, putting him in deeper hot water.) My legal fees are growing, and I would prefer not to lose even more, if he won't pay in any case.

3) If he responds to my Response, will I need to file yet another response, thus incurring additional legal fees in the process?

4) If I win the court case Pro se, can he simply appeal, thus prolonging the process even more and potentially increasing my legal fees?

5) If he goes bankrupt or leaves the country, is there any way I can collect from him?

6) Any other advice you can give me?

Thank you! Sorry this is so long, but I am emotionally drained by dealing with this unethical jerk. He is a despicable human being an an insult to his profession. I sincerely hope he gets disbarred so that he won't be able to continue taking advantage of unsuspecting people.