He's had quite the adventure. Grizzly Hills, Vashjir, Jade Forest, Kun'lai, and the Siege of Orgrimmar. I honestly couldnt see it end any other way.
Though I did enjoy seeing the Vision where he allowed Thrall and Varok entry into the city. Perhaps he held on to hope still... that despite his loyalty to the warchief, and despite the knowledge that it was NOT his place to question Garrosh, he could still be swayed by those whom Garrosh would consider his peers.