Yes, I'm familiar with that controversy too. Ford did indeed, at least from what I read in the same account you mentioned, apparently try to get him removed. Redlich was, well, he was a leftwinger and not a liberal. He thought the Rosenbergs and Hiss were innocent. Or at least they shouldn't have been given the death penalty (which he opposed throughout his life). As to Hiss's innocence: What was he thinking?
Re Shenon's book: it's a pretty good overview of how the WC was formed and worked.
These were honorable men in a difficult situation. Sure, legitimate criticism of the investigation can be made; it was a product made by humans: what do people make that is perfect? But the claims that they deliberately covered things up is simply not, for me, true.
Steve, here's the link to WC Executive Session of May 19, 1964. It's mostly about Norman Redlich
https://www.maryferrell.org/showDoc.html?docId=1332#relPageId=5&tab=page
the last 10 or so pages are almost unreadable which is too bad but it increases my admiration for both Warren and McCloy while further diminishing my opinion of Russell. It's a bit long (40 readable pages) but worth the time and effort.
I completely agree there was no cover up. The very notion of leaving things out was repeatedly considered and rejected by the WC members in many instances and they were aware of the historical importance of this inquiry.