What's the name of the book Fr. John wrote?
The book that sticks in my memory is St. Gregory Palamas and Orthodox Spirituality
It would only be a brief reference, if indeed the final disposition of Barlaam is mentioned there, and would not give you precisely what you are looking for...In any event if you haven't read this brief but dense history, you should. If you are not finding what you seek there, you will at least see that this is not strictly and east-west controversy at all, and that will be most useful to you.