"Reality" shows have been around long enough that people know what they are getting into. They know that 'twists', editing and characterization are all part and parcel. I think PH has been totally unfair, I wanted KDTC to win but they knew what the were signing up for.
Besides, the "real world" is not fair. Is it fair that those losers are on a beach somewhere slurping on boat drinks and getting laid while the rest of us have to stay home and work for a living? Why should reality tv be fair?