Once his creditors have been satisfied, the executor needs to file an Administration Account of all income and expenditures during the estate administration period. That gets filed with the Court in the county where your father in law last resided. Once that's filed, the Court usually takes about 30-90 days, depending on the volume on the Court docket, to approve the Account, assuming it doesn't get audited. When the Account is approved, final distribution of any assets can be made.
Keep in mind, however, that final tax returns will have to be filed and any distributions received from the estate may be subject to inheritance tax, depending on the relationship between the decedent and the beneficiary, not to mention state law.
I think you'd be careful before taking any action and you'd better discuss your case with pro bono based (free of charge) attorney in your area. This is important because you may hear good advise from the one who specialized in the area.
Anyway, since they are free of charge, you have nothing to lose to consult your problem with them. Trust me, they are very good people, very professional and willing to help you all out.
I just searched on internet for you and found 2 websites that perhaps useful for you.
You may have the complete list of top pro bono attorneys in USA on http://www.criminalsattorney.info/index-...
Just visit the website as soon as possible to get help.
Another website that I also found for the complete list of law firms (lawyer) in USA can also be found on http://www.toplawfirms.us
You may even search law firm by state, in your area.
Have a great of luck!