There's no way to go into any kind of detail without stepping on someone's privacy, so I won't.
I can say that, prior to today, I felt unsure of how my administrators viewed me. I had the distinctly unpleasant experience today of sitting in a meeting listening to someone outright lying about me. It was unsettling and I remained unsettled until the end of the day when a smaller, second meeting clarified that no one believes those lies and I have nothing to worry about.
It felt like someone flipped a switch, and I went from not OK to OK in the time it takes to exhale. It's always good to know that your boss will stand up for you.