I must admit I have a hole in my history knowledge here. What book is this?
I was under the impression that Herd and Haynie were still working with the C-128 during that time, Haynie then shifted to the Amiga world for the B2000.
On the edge: the spectacular rise and fall of Commodore by Bagnall:
http://tinyurl.com/2u8q8vvA bit shoddily redacted (typos and spelling errors); nevertheless a great read. A must buy for anyone interested in the inner workings of Commodore.