Hopefully I'm in a better state of mind this morning...
The problem is... given his misconceptions and the pain the rest of my family is doubtless going through (not to mention their own individual stresses), I can see where he's coming from. I can't blame him for that.
I can blame him for treating me as his own personal vent for his stress. I can blame him for saying he's coming for a discussion and arriving to deliver a diatribe instead of with as open a mind as possible (in this situation).
I know I didn't help the situation. I'm good at saying things aren't my fault... but I have a very hard time seeing how I'm to blame in this, except in part. It's funny... I talked with my wife, who claims she's not doing nearly as well as she appears to be... she says that the people who can talk to me have "personalities that don't rock the boat" and that I'm quick to blame others. I think those people have enough cares to set aside their own fears for the future to actually care about me and what I'm going through... and that me blaming others (yeah... it happens...

) is a defensive measure that only happens when I'm being attacked.
I think that people think that a heated emotional argument is more likely to bring out the truth. I think it's the only time you don't see the real me. I could say anything at all if I'm angry. I'm more speculative and less rational.
With my brother's advice, I'm going to let it lie for a time. Hopefully that doesn't just let resentment grow, but I'm good at dropping things, almost as if they never happened. Obviously it will still change how I act around him, and I certainly wouldn't let him come back without an apology, which I would also be happy to give.