I think, were I in his position and acting in good faith, I'd be wanting to release things that are done to prove they are done before asking for more money and I'd want to maintain very open lines of communication at this point.
I'm not so sure he's as much a crook as a walking disaster. We all know what the road to hell is paved with.
Personally, while I have my doubts, I'd very much like to see this finished and released.
Be warned, Spacemaster Privateers is my all time favorite rpg and it makes T5 look well organized, well illustrated, well laid out, simple, and well polished by any comparison you could care to make.