yeah, that would suck, ive been so much happiers since i use that tweak to get rid or film grain. I'll be running in offline mode for now i think. Had no problems myself, no crashes yet.
I would run in offline mode, but when I don't play solo I play with a friend of mine that bought the game just to game with me I can't really leave him just because I wanna have the trainer available when I play alone, besides I trust Cal to update the trainer sooner or later so it's not a big deal =)