Mnytime, my take on this (in addition to AfricaBrass's "righteous anger" allusion) is that it's not un-Christian to be human. Anybody attempting to pursue a spiritual path that may be framed by a certain ideology--Christian, Jewish, Islamic, Buddhist, etc.--is still going to experience a wide variety of emotions in different circumstances that may seem at odds with tenets of the religion in which they believe. I think it's especially maddening when you see somebody attempting to act like a bully while they wrap themselves in the cloak of a particular faith to which you profess. It's also easy, I think, to get too self-righteous in defense; at least, that's something that I have to guard against. (I should add that my own faith falls somewhere roughly between the writings of Thomas Merton and the Church of John Coltrane. )
This guy, though--what a Pharisee!