My therapist says 'shame rolls downhill'. Meaning, that abuser acted without shame. He should have felt shame for how he was talking/behaving, but he didn't and you absorbed it. But it isn't your shame. It's the shame he should have had. You don't need to take on that shame any longer, you did nothing wrong. I am really really really glad your coworker reported that behavior. And I am really sorry you experienced that, that's awful and you didn't deserve that. No one does.