All the other gadgets still work, so you can always fight your way across the level on foot, right? Well, yeah, except that without the glider cape you'll be completely stranded in a certain room -- you know, the one filled with poisonous gas. That's right, in the pirated version of Arkham Asylum, the always-prepared Dark Knight is such an useless idiot that he gets himself killed due to his shitty cape.
Much like our friend Timmy, back in fourth grade. They walled off every staircase with roof access that summer.
This trick gets misconstrued a lot as a simple game glitch, so you have people like this guy asking what's wrong with his game at the official Eidos message board ... only for the forum administrator to explain the situation and tell him: "It's not a bug in the game's code, it's a bug in your moral code [punk]."
That's the greatest Batman quote since "I'm counting on it."