If he was screwing a subordinate or the wife of a military man; that does not get swept under the rug. He his superior didn't relive him, he would wind up going down as well. The word of this kind of stuff gets around.
Yup, I listed that under the "exceptions." I'm curious, though, WaPo says that the IG was involved in the case. They don't normally get involved in sexual misconduct cases that I know of. Can you shed any light on that?