I agree with you there. 4 stars don't get relieved - they get retired quietly. Unless, of course, there is something really dramatic going on.
Even sexual misconduct, as long as it's not really bizarre (think live boy or dead woman) isn't generally enough to relieve a 4-star. They are generally told to resign before it gets to that point, in order to save the service (not the officer) from the disgrace of relieving them.
There's a HECK of a lot more going on here than meets the eye.
It is enough.
Yup. You can be certain that the Pentagon reporters will shaking all the branches of the tree, today and this evening, in an attempt to get the story for the morning papers. Too many people know the story and someone will talk. This is as big as Singlaub or Edwin A. Walker, and they were both just two stars.