Don't get me wrong - I firmly agree that eliminating Russell is a smart move.
Yet the reason that the majority of these people turned against him is pretty childish. Yes, he's cocky and has had words at times with everybody in the house. As a relatively intelligent person with an athletic build, he is a threat to suddenly make a run for the finals.
But that's not the reason he's (probably) going to be put up, and (probably) evicted on Thursday. He's going home because he had the audacity to sit outside with Casey, Laura, and others on Friday night...and then again last night.
Sure, Ronnie had claimed to Jeff, Jordan, and Laura that backdooring Russell was his plan all along. That's complete b.s. that he said to only save face with that crowd. It wasn't until Friday's incident that started people like Chima and Lydia's whisper campaign.