GOWII problems

[Spidey17]

Just curious about the turn off power rules for this game. Lately GOWII has been more laggy than usual, stuttering at cutscenes mostly. But then I ran into a glitch whilst playing hard mode, where after you save the translator you have to lift the door and fight the cyclops. But when I open it I just get sky, I fall out and plummet. The first time I just died or reloaded my save and it worked fine. But this time I've tried everything, plus I had to turn off my ps2 during the blinking loading screen, and now that save won't even load at all. I tried to clean it, but I don't have the proper stuff. And I tried my other save, it worked, but took longer than usual.

Any other ideas?