Why was rashad getting booed? ( possible spoilers)

Forgive me for not being on top of things here but I have been very busy and not been able to keep up with recent events past headlines and small...

Source: http://www.mmaforum.com/ufc/89039-why-rashad-getting-booed-possible-spoilers.html

Phillipe Noer Jake O Brien Naoya Ogawa Sean O Haire