He got cheered like crazy! And deservedly too. This makes me think the eviction was a fluke. He only got 37% of the vote. That means that 63% of people really wanted him to stay. The problem was that this was divided up among all of the other housemates.
If it had been Luke vs. Dale, or voting to save, I'm sure Luke would have stayed because he actually is very popular. I think this is like Nikki's fluke eviction when she was up against a lot of people.