In my opinion, yes he was. Lane-splitting or lane-filtering (driving/cycling between stopped vehicles, or stopped vehicles and the curb) is illegal, even though it's common practice. So when there is a lane with no cars stopped at the curb, and the cars driving in the lane have stopped because of a...

I was cycling on a street with no bicycle lane, and a fairly wide right lane, wide enough to be shared by cyclists and cars. I was in the rightmost position in the lane, about a couple of feet from the curb. The cars were moving slowly because a street car was making a right turn at a traffic light ...