Pardon me if I'm mistaken, as I'm largely unfamiliar with IP law the way it keeps changing these days, but since you aren't a legally recognized head of the project and aren't, as far as I know, inextricably tied to it except in that you've listed yourself as project head, even if he tried to sue you couldn't you just say "oh, it's not actually mine, I'm just a director and thinktank type- it's [fill in member's name, preferably one overseas]'s!". Should he bother to reset his legal crosshairs on that other member, and deal with the accompanying national/international laws and courts and ****, that individual could then do the same. There's a lot more HLPers, and interested outsiders, than his limited funds could accomodate, and you could basically keep him running back and forth until he got tired or went bankrupt without ever having to engage him in any hypothetical legal battle at all. And, naturally, keep all the FS2-related stuff, since the whole license thing would never even have time to come up.