Thank you @geoham that was a rather good summary. I do know of Pink Floyd, they were in the 'older brothers' bands category when I was at school. Apart from the few very well known numbers I knew precious little about them. I now know more.
Having no dog in this particular fight I can see how the schism came about and how both parties might feel animosity towards the other.
If the keys guy really was hoovering the Peruvian then he would have become a deeply unpleasant character, the fact of his rehabilitation into the band therefore speaks of a capacity for forgiveness and rapprochement among those remaining members.
However none of us is privy to the detailed mechanics of the fued and so probably best leave that to those involved.
What I can see is how difficult it must be for the songwriter and band leader to watch other cats get fat out of what he regards as his larder.
Having said that, I'm a firm believer that such things are best kept off the record.