Like everyone else, mate, I'm just glad you've done so much for us already, and I'm disgusted at Rebellion's actions - I take it what they did was legal re: distribution of your altered code? Legal maybe, but certainly not moral.
Anyway, I hope you do get the time and the will to continue work on the XBox version, but I can understand if Rebellion have soured your interest in the project.
Where is your home page for the PC version of your code, by the way? I'd be interested to see it (though I doubt I'd play it, I'm not too keen a PC gamer nowadays). I've tried google but with no success.
OT: I've heard they might be doing a reboot of the film Alien, I really hope not - I hate reboots, as they are mostly very inferior to the original (why can't they come up with some original ideas).