Thanks for sharing -- I love puzzles like that. Just curious: Were the lldb session snippets taken from the original debugger session? I keep getting weird looks when I use a command-line debugger just to have a transcript afterwards. (The weird looks being from people who'd rather send me a screenshot of their GUI debugger's call stack.)
If you mean the original but from last year or so, no. I didn't even have it on my computer, and was kind of remote-debugging through my friend to figure it out. It only happened on 10.6, and I didn't have that handy, so I couldn't check it out locally.