My Rueben theory
So I think that the reason Reuben was in the bottom two is because all of the teeny-boppers who were voting for Carmen and blond Kim (or another way of saying it... people who were voting for "looks" instead of voice) have moved their votes to Clay or Josh, the "next best thing".
Next week I'm going to vote, vote, vote for Reuben and Kimberly!