Now I'm not excusing his actions or trying defend what he did. It was wrong. But to flat out label him an abusive person is a little extreme. Nobody knows anyone else's emotional obstacles throughout their lives that shapes the way they respond to certain scenarios. In this instance he should have handled things a little differently and I'm sure he feels 100% guilty about the way he acted in hindsight.
This could very well be an isolated incident. An argument that escalated too much and rather than leave her in a city by herself he wanted her to get back in the car.
Was alcohol a factor? Not even an excessive amount either. It can play on your actions aswell.
At the very least he should seek some form of help in dealing with emotional stress. And figure out what things trigger him to act certain ways and how to deal with them before he reaches his boiling point.
But to label someone as abusive based off of 1 incident is a little harsh in my eyes. But then again we live in a time where everyone is judged instantly for actions by people who know absolutely nothing about their personal lives or mental struggles.
Again, the way he dealt with the situation at hand was wrong. But before we judge his entire life, there's two sides to every story.
I hope they both get the help they need.