I have not read "Plenty of Blame to Go Around." It's on my To Do list (which is already longer than my probable longevity!).
Here is a website about the book that contains an annotated Table of Contents, reviews by other historians, and excerpts from various chapters:
http://www.stuartsride.com/theCampaign.htm
J. D. Patruzzi also has a website that describes his books and his journal articles:
J. D. and Eric are members of the Gettysburg Discussion Group and, in my ten+ years with the group, they both have contributed articulate and enlighting postings about the battle. I have learned a lot from them and the rest of the members who have studied the battle for years.
Hope this helps.
Alice