@tsarstepan,
I'd agree with you if he was able to avoid it - but it is hard to tell strictly from the video what was going on.
Assuming what it looks like (and who knows what happened right before to get him into the situation) - he was surrounded by the motorcycles and then the one guy slowed down in front of him resulting in the initial bump/accident. The police report that the SUV driver was not at fault for that accident - he couldn't stop in time.
The next reports state the riders were yelling things at him and again assuming he felt he was in danger of them going after him and his family - he took off - that part seems like self defense.
But if he were able to avoid it in the first place would be the question. If he was then of course he should.
The one thing I heard someone say how they were once driving in CT and all of a sudden they were surrounded by many motorcycles. Not like she had a choice to avoid it and pull over as they were all around her. She was saying how scared she was, and luckily they just all eventually all whizzed past her. There were so many and all around and weaving in and out and coming close to all cars on the highway. She said how frightening it was. She really didn't have an option to get out of the situation - but then no one stopped directly in front of her.
I guess that is why I asked the question if anyone was ever confronted with this situation - where they were surrounded by all these motorcycles. To sort of understand from the driver's point of view - is it avoidable? Ideally that is what you want. I just think after recently coming from a trip to NY and driving on their parkways how easy they could take over.