I think Daniel was wrong to call what he says he attained "arahat". That term is not what he attained in my current opinion. He made a mistake in diagnosis. He got only half way there in my opinion. It can happen without a teacher there to put you right. He did though, in my current opinion, attain to a high stage of awakening. Just not the final stage of arahat. Lots of yogis are finding out he was probably wrong. There is still more to do, and I think because he had no-one pushing him to explore more at the time, he just mis-diagnosed. Same with Kenneth Folk. What Daniel's book talks about got him and many others to that stage. It is all valid and if you are able to leave aside his misdiagnosis, all the rest is useful. But each to his or her own.
This was not a lecture, tilt. I consider you an advanced yogi. An opinionated one, but who isn't?
Lots of love,