That's a fun story, but it's straight out of Inside Star Trek: The Real Story (which Cushman quotes from extensively). It's a shame he couldn't get an interview with Herb Solow to talk about some of the omissions and mistakes from that book.
Yeah I've read that book, but it's been so long I don't remember a lot of the details anymore.
You also get a definite sense that most everyone really gave a damn about what they were doing even though they were working in a pressure cooker. Even with all those good intentions it's easy to see how some personalities might clash.
Yeah with all the problems and headaches they encountered, it's kind of amazing the episodes came out looking (and working) as good as they did.
And it also becomes a lot more obvious why the series went downhill in the third season. Roddenberry and Coon had such a huge
role in fixing and rewriting the scripts-- much of which went uncredited-- that once they left there just wasn't anybody around anymore to keep up the high quality.