It's very hard to draw any conclusions from the clip, but playing devils advocate; it is arguable that the pug is in the wrong lane to start with, since he isn't gaining on car in the left lane. And then to come to a stop, without even attempting to reach a safe place (if it was a mechanical fault) is just crazy.
Could still be a scam, just not very well thought out, he may have been anticipating the van rear ending him. I really am struggling to put an angle on it where the pug isn't at fault. Even if the van is tailgating, he still managed to stop in time, which means car number 3 was traveling too close.