Is it not obvious? This was all an angle. Sonnen got his way. A spot on TUF. Another main event title shot. One last HUGE payday. Chael knows he's on the downswing of his career, and I can honestly see him retiring if/when he loses to Jones. Why not go out a little richer? Sonnen has played the organization, the fans, and he'll ride off into the sunset, perhaps without a belt but definitely with a heavier wallet.