I can only think of one thing. The episode sucked, plain and simple. I'm not a fan of creepy AU episodes which don't really make much sense to me, because the wardrobe was weird, the story was weird, and the whole episode was weird in general. I'm not huge on Chad or anything, but believe me, I'm not crapping the episode just to make Chad look bad. That would be low, and if I really wanted to bash him so bad, I could think of other things to say. But like I said, the episode was just bad in my honest opinion.
Of course, I am not omitting the fact that SOME people who hate Chad would diss the episode for the sake of making him look bad, but there are a lot of other people who generally just hated the episode because it was bad.