Are we being frozen out purposely?

Former job, had a director who threw me under the bus like this. There's a lot of back story, but the summary is: several times I also requested fixes be made, they were ignored or denied. Then the demand went back up, they claimed our team dropped the ball, he implemented MY SOLUTION that he rejected or ignored, "saved the day," then yelled at my boss that I was an incompetent boob, and "you can't just hire any longhair and expect professional results. Get me a college grad or something: this is a real company and not some Atari users group playing pong out of their parent's garage." I am a college grad, but that's beside the point; that's the gist this manager had. He took credit and shamed those who did the work. Complete ass SO, our boss said, "don't suggest anything or tell anything to this clown without my authorization anymore. In fact, if he asks you anything, refer him to me." One of the fixes I did was a script that this clown then edited to make it look like he wrote it. He did this to a lot of people. Well, one day, this script "broke." It didn't really, he just needed to change a few things, but he came to me and started screaming at me that my script was now responsible for some disaster. I can't remember what, but it turned out that it was just a minor concern easily fixed had he actually read or understood the goddamn script. But I said, "I am sorry, you will need to make all requests through my management." He didn't like that,, no sir. So he stomped off to see my boss, actually pulled him out of another meeting, demanding I get written up ---right then and there-- for "insubordination." A lot of HR stuff happened for a bit only tangentially related. But in another meeting, my boss asked him to explain his behavior to the other managers. I can't remember what my boss said, but I do recall that it was exposed he had been taking credit for others' work for quite some time, and that he could not explain anything he had taken credit for. "Why do you not know, this? Why did you ask my subordinate to fix issues you claim you created? Why am I expected to write him up for insubordination for following my orders?" This guy lost MAJOR face, so to speak. In front of HIS management. I wish I could say that he was fired or something, but was still working there when I quit a year later (not because of this, just a better job opportunity).