The UFC has parted ways with another sponsor, Zach Arnold asks why this keeps happening and I am inclined to agree. 

Regardless of why it keeps happening, Full Tilt Poker has been exiled from the Octagon. The speculation surrounding the recent announcement is that the UFC found a better deal with competitor Ultimate Bet. There is also a rumor that the sponsorship fell apart due  to Spike TV's objections as evident in the fallout around UFC 95.