Fast Forward To the part where the girls are crawling through the vents. When The hand removes the shoe that is holding the fan in place, it cuts the devil girl into pieces but the rope still pulls her upward.
I thought that was a slip-up at first too, but its not. The rope is in between two blades, and the one it was touching is just pushing it in a circle. It's weird but it makes sense if you think about it.
The rope was around the pipe that was holding the fan blade up, therefore when the fan began to spin, it twisted the rope bringing the devil girl up into the fan...I love that movie!!!
The rope (which was actually Tanya's whip) was attached above the blades which meant the rope went through them. Blades sharp enough to cut a girl up like that and going at that speed would not just push the rope along, it would cut it. Therefore Tanya would've fallen to the ground, saved from choking instead of pulled up through the blades. It was a major slip-up.
not what you'd call a major slip up really in the great scheme of things. i mean, if you watched the whole movie with that in mind, how does the hand crawl up the fence to write "she's mine"? and where does all the blood it uses come from. And how does tanyas glove survive to be pasted against the inside of the vent with blood and bits? Answer? Spoof horro movie magic. Which i suppose means that no spoof ever has a slip up. just 'artistic license'. now a car in lord of the rings is a REAL slip-up. :-)