I like this "Canon" you mentioned. It looks pretty forthright.
And the facts keep on disputing the idea that the Nicene council produced a radical course change in Christian history.
Curious, those stubborn facts...maybe there's something to them.
If you'd like a good, contemporary, deeply grounded in the texts approach to the council of Nicea I recommend Norman Tanner, The Councils of the Church. Tanner (a Jesuit at Oxford's Campion Hall) was the general editor of a new text and translation (original language on the left page, English on the right page) of a collection of Decrees of the Ecumenical Councils. He's a specialist in later medieval theology, but the history of the councils is excellent and readable.
Thanks for the recommendations.
I picked up one of the books Pagels cites in her discussion of Nicea, but left it at work -- I'll scan through it and see if there's anything worth mentioning.