Let me be frank —
Much like your citations of Eckhart, it's one thing to copy and paste a piece of text, out of context, and frame it in your own polemic.
It's quite another to understand what the guy is actually saying. If you think you understand Eckhart, then good for you. Personally, I doubt it. It takes years of reading, contemplating, praying ... and then we can only wonder ... Eckhart is called the Prince of Mystics, yet he never claimed to have had a mystical experience. He speaks from an intellectual conviction ... but for all his Ürgrund and 'uncreated spark' in the soul, he believed in the doctrines and dogmas of his Catholic faith. The Trinity. The Incarnation. He was Orthodox, and the claims of heresy have been dismissed.
If you want someone to bash the Church over the head with, you'd be better off with Marguerite de Porete.
I have read Origen, and it's bloody difficult. When it comes down to it, given the choice of someone like yourself, with an obvious agenda, and someone like Mark Edwards, a scholar who reads the Greek, who's a deep thinker, and who's clearly a major fan of Origen the philosopher as opposed to Origen the theologian, I'll go with Edwards' commentary.
But here's the killer — I've read his – Edwards' books. I've listened to him lecture. I've asked him questions, and half the time I have no idea what he's going on about!
So if you want a serious discussion about Origen, or Eckhart, or Arius, than I'm up for that, but if you're going to start playing fast and loose about what you choose to accept and what you don't, what's reliable and what's not, what counts as a source and what doesn't, or what happened a millennium later, based on prejudice and assumption, then forget it, I can't be arsed.