LOL. Well, this thread really took off on its own didn't it? I'm glad we've worked out all of our differences, and seem to be pretty much on the same page. No offense is taken by anybody who feels like they might have offended me, and I hope you all believe I sought to offend none in anything I have said. :-)
Being so much has been said since my original response, I can't possibly hope to respond to each reply. So, I'll attempt to just make a general reply. I hope nobody minds.
I think ccirder really expressed the sentiment of my heart on this issue the best in one of their posts. The "anger" I speak of is definitely the hurt, confusion, desperation, etc. that arises when something happens, usually something major, in a way that just takes us for an awful surprise and shock to our system (even if we saw it coming). Please don't get me wrong, I am definitely not advocating we stay in such a place. Christ definitely has no intention we stay in such a place either: "I have come to bind up the broken-hearted." And each time I felt angry towards God over a situation, healing was definitely brought into my heart.
James says for us "to be angry, but sin not." While contextually he is definitely speaking about how we deal with one another in our interpersonal relationships, I believe we can extract this same principle in relationship to God. While we can definitely be angry at God in such a way that is without a doubt sinful, I believe we can also be angry with God at a way that is not sinful.
This anger is definitely something that issues out of the frustration of the soul of an individual who loves God, but can't help but feel pained towards Him in some way by whatever has caused this emotion. Is it selfish? I don't think so. I think it's simply called being human. It's our finite attempt to try and process and grasp something beyond our own human ability, which causes us, for lack of a better term, to "short-circuit" at the time.
But, I believe such is ultimately calculated by God to teach us something, "in the school of the Spirit," that we could not otherwise have learned. No doubt, the two times I have felt angry towards God, God taught me some things I really needed to know that I did not otherwise know, and birthed something in me that was not there before. These were definitely times of growth.
Ultimately, and time does not afford me the opportunity to be as detailed as I'd like, I believe these things must be wrestled out in the Scriptures. If you were to closely study some of the Psalms, and look at the rather raw content of some of them, namely, the one's written during the exile, you will definitely see this "anger" I talk about, expressed through a divinely inspired prophetic utterance, and recorded for us all to see.
Thankfully, as mentioned earlier, God does not desire we in anyway live in such a state forever. The trial always comes to an end. But during that period, we are going to have some very personal and very raw and very real emotions that come from us, that I think, need not be viewed as sinful, but rather, just as us being "real" with God. And where else but in prayer can we be more real with God than anywhere else? I think that's what we read in the Scriptures from time to time.
Many blessings.