I'm betting it's a right hook, the truck barely slowed and didn't signal because he was in a rush to turn around and go back the way he came and the bike had no chance of avoiding the collision. I've seen people do the same thing along Alaskan Way as people are heading to the baseball game and looking for free parking. But I'm used to it there and have only had one verbal encounter with someone so far this year, he was startled to see me even though he had just passed me.