All has been quiet on this topic for a couple of weeks so I'm wondering if this forum has run out out thoughts and whether we should ask the moderator to transfer it over to the wider Rumours and News forum.
It is important to keep discussion of this tragedy alive as otherwise what should be the text book example of systems' failures will fade into obscurity and the lessons never be heeded.
Bottom line is that we are dealing here with suicide/mass murder, or vice versa, that was relatively unknown 10 years ago. And interestingly, none of the present security measures could have prevented it.