Source on him converting to Buddhism and also apparently still being alive in the world?
I thought he converted to Islam than eventually renounced it for something he called the Numinous Way.
I am not even sure what is going on with him at all.
I've read practically all the ONA material though I have ever been able to find.
I do not agree with "acausality" and also I find that, like many other cults, the only useful knowledge they have is all taken from Hermeticism and then they add some bullshit on top. Both JoS and ONA derive a lot of their knowledge from Hermetics and all the rest they added in may as well be dross that can be ignored. The Sinister Way is unbalanced. It reminds me of "Might is Right" by Ragnar Redbeard, a book which I agree with everything said in it, BUT the scope of the book is not the whole of ethics. It's also kind of like some of the Libertarian arguments, which are all correct in their own scope, but the ideology just falls apart because of its limited scope which is mainly just concerned about economics (see also Julius Evola and his criticism of Libertarianism).
I don't know why ONA texts ascribe to acausality. It's bullshit superseded by superdeterminism. You don't need acausality when you have superdeterminism which explains much more and better than muh quantum foam and random fluctuations. Acausality also is, so far as I understand it, in conflict with absolute law and order. Acausality can only be a probabalistic fiction as far as I'm concerned, a case of "the map is not the territory" as Robert Anton Wilson would say.