I don't have much of a leg to stand on regarding the anger issues. I've been raked over the coals pretty hard here in the DB forums for venting here and the (wrongly-assumed) perception I might let those emotions out before my children. (If that were the actual case, I'd fully agree, but I won't get off on that tangent now.)
I will say that I can whole-heartedly agree with what the others have said about anger -- it is indeed a part of the process. And in fact, if one does not properly vent the natural and expected anger we feel from a given situation, especially one so extreme as D and its aftermath, we are only laying the foundation for a fall later -- either a breakdown, sickness or some other physiological and/or mental reaction.
Having said that, the simple fact is there is no sin in anger itself, only in what we do with it. As the Apostle Paul said, "Be Angry and Sin Not." So don't worry about it. Vent here and in other healthy ways, and do not let your emotions lead you astray. Feel your emotions, work your way through them, but do not let them master you.