Typically Dan, his natural position is to wait and see (and keep his mouth shut). At least this is what a lawyer would advise. What this simply means is he will not offer up anything unless there's a court order forcing him to do so, then he has two choices, provide the bare minimum of what's asked for or flood the SA's office with so many documents and bits of data, that they couldn't possably sort through it all, particularly in these under staffed and economically restricted times.
This is why very early on, I recommend you go public locally, in his area with this. Every TV and radio news origination has a department that looks into scams, frauds, under handed dealings, etc. They help old ladies that have been ripped off by contractors, etc. Your story would be a "fluff" piece or what they call "filler", but in most of these cases, they don't get air time. The is because of a few phone calls (from the news crew producers) the issue is settled, with the stipulation that it not be aired. Since their real mission is to help the viewer or listener, they comply and everyone is happy. The one's that do get put on the air are when the two parties can't come together and it makes for interesting "fodder" to fill in a news paper page or a 3 minute segment blank on the 6:00 news. Again, trust me on this, I've preformed this on more then one occasion and it works. It works for the 90 year old couple that bought a sick dog from a breeder, who refuses to refund their money, let alone pay for the vet bills, to guys trying to buy a yacht, that gets sold out from under him after the deal has been made. You have absolutely nothing to lose at this point.