That last scene was hard to stomach... (pun... intended? I don't even know when I'm trying to be punny any more)
As hard as it was to watch though, it did make me want to stick it out to see just what the fuck is going on. Also, once I got over the "holyshitthatisfuckingjustnonowhatareyoudoingdon'tdothatstopstopfuckwhyamiwatchingthisstill" factor, I couldn't help but admire the practical effect itself. It looked good. I mean, it looked horrible, but it did a very good job of looking horrible.