Yeah it lost its momentum as soon as it became clear that the Governor hadn't changed at all. His motives and intentions are still the same (and theoretically good: keeping people safe and building a home, the problem is his fascist attitude behind it).
It still set up the coming mid season finale rather well. I just hope he gets his ass kicked without the decent people from his camp all biting the dust.
I hated Martinez so much last season but his death now was so unexpected and pointless it didn't even trigger a "YES!"