I don't recall any post like that. And there is nothing online about a change.
Earlier this year, there was a rumor online that Sarver was selling, but he later denied it. The last time I checked, Sarver owns 30% of the Suns and, because no one owns more, he is the Managing General Partner.
When I sent letters to the other investors, urging them to put their 70% together and remove him as Managing Partner, another ASFN poster said that they are all Sarver's boys. He's made them rich in the banking business, especially in San Diego. I received no response, of course. Nor when I wrote similar letters to NBA Commissioner Adam Silver or to Jerry Colangelo, who picked Sarver to be his successor.
I am curious where you read that his ownership percentage was changing. Or how it would make a difference.