http://www.billnelson.com/forum/viewtopic.php?f=1&t=22689
Bill's postings are really interesting, first-hand insights into things. Asked about Mick's take on things, as expressed in his book, Bill says:
I haven't read Mick's book, I'm afraid, so it wouldn't be fair for me to comment on this. And of course, Mick himself is sadly no longer with us to clarify or retract his statements.
All I can say is that when Mick worked with me on the 'Chimera' tracks all those years ago, I don't recall him ever saying anything bad about, or critical of, David. In my own experience of working with David in the past, he has always been kind, courteous and respectful towards me.
At one time, David and I exchanged letters fairly regularly and I would recommend various musics and books to him. I still have those letters somewhere. I remember alerting him to the work of Jon Hassell, John Fahey and Derek Bailey. Also to the esoteric/occult stream of the Western Magical/Alchemical/Hermetic/Mystery tradition, (Rosicrucianism, Martinism and so on.) He was keen to follow up those leads, which I personally was pleased about.
Actually, it was David who helped to fix me up with Opium (Arts) Ltd when I was having terrible problems with my own management. So what I'm reading in the above post doesn't really seem to fit the person I knew back then.
However, band dynamics are often fraught with ego clashes and so on. Unless one is intimately privy to the in-group mind games and attempts at one-upmanship that inevitably go on, it's difficult to know what the real situation might have been. Being in a band is a bit like being married to three or four wives at the same time...it can be ecstatic but it can also be h*ll.

All I can say is that Mick was a very talented guy, a genuine artist as well as a gifted musician. But, maybe he felt some resentment at the amount of attention and adulation David received from fans and press? I do think it's sad when such resentments sour friendships and musical partnerships.
Then, expanding on some familiar debates about composition versus arrangement...
I think it's fair to say, (at least from my own experience,) that David's approach depended on the input and contributions of other musicians to some degree. The tracks I played on for David were, (in their raw form,) bare skeletons. But David's talent lay in his choice of musicians to flesh these skeletons out. My own recollection is that I was given free rein...I played several different versions or ideas over the rudimentary rhythm track, as did, I think, other musicians. David then later picked through the ideas we'd offered and carefully chose a certain selection of them...it was kind of composing by editing, making the best of the input of the musicians he'd invited to play on the recordings. He afterwards came up with lyrics and vocal lines to suit the tracks. I thought this was an interesting approach and didn't ever think that he was putting songs together purely from other people's creativity. I just saw it as a kind of post-modern assemblage process and perhaps all the more fascinating for it.
He also has some interesting thoughts on the nature of pop fame and the dangers of being put on a pedestal etc...