Topic: 9/11 is spiritual. To many, the World changed after that moment. Even cinema prior to 9/11 seems very different to me than what we see now.
BTW, even if you're someone who says he is objective and is bound by no paradigm, the paradigm of no paradigm is you paradigm.
When that paradigm is shattered, the world we live in actually stops. Our sense of "self" changes. The fabric of our reality unravels. For a moment in time our internal energies are free to roam about and align with a much wider sea of perceptual potentials/energies at large in the universe. That "roaming" can be ecstatic due to all of the personal energy that is freed up by not having to be spent maintaining the focus on the old paradigm or it can be frightening and chaotic, or somewhere in between. It depends on the individual and the reason the paradigm broke down.
When energies are free to roam sans the constraints of the paradigm, all kinds of "impossible" things can be perceived. There can be OBEs, NDEs, UFOs, Psi, etc. Reactions can be a sense of "enlightenment", paranoia and insanity, a scramble to create a new workable paradigm, etc.
What can make the paradigm break down? Lots of things. Could be death itself giving rise to NDEs, could be simply "spacing out" due to monotonous activity, could be psychedelics, could be a severe shock to the system like an illness or injury, witnessing something horrible or very strange, being in a war and realizing that some fundamental understanding, like the value of human life (including your own) is actually zero, could be meditation techniques. Basically, anything that causes the internal energies that maintain the focus on the paradigm to relinquish that focus. The extent of the relinquishing (just a little v total) determines the how much new energies can be aligned with, for how long will the new alignment last. The nature of the individual experiencing the re-alignment and the cause of the re-alignment will largely determine the quality of the reaction to it.
For many individuals and for our society as a whole, 911 was a paradigm shattering shock that had the effects I describe above. That is the foundation of it being "spiritual". It opened an opportunity to a new paradigm for many. I think this is the argument. A massive shock causing a paradigm breakdown, releasing all of that energy that no longer was consumed maintaining the old paradigm would be a spiritual event. It may have had ripples both forward and backward in time; possible since time is a paradigm concept that doesn't seem to exist in extended consciousness realms.
My only issue with that is that I don't think 911 shattered paradigms held deeply enough. It didn't get to the level of breaking fundamental assumptions about reality. The paradigm(s) that was shattered was merely that the USA is a safe place, that foreigners love us, that our massive monuments will last forever; that kind of thing. Yet, it was still a massive shock. So maybe that was enough to cause a small ripple in the fabric of reality.