Warning sarcasm below.
"I'm leaving to spend more time with my family" Where have I heard that before? Oh yeah, from virtually every CEO asked to resign in the past ten years.
My guess is that the truth is somewhere else.
It could be that the CEO of Pimco significantly underperformed his peer group and bond index funds for several years, or that he was wrong on some very big turns in that time period. Or it might also be the his name is middle eastern and that just isn't in style these days. My guess is that it is more to do with his terrible investment record.
This guy should be the poster child for why investing in index funds is such a good idea.