I don't know if this van features on FB or Twitter. I don't have an interest in it. I just go there when I'm at the Ricoh because the food is better, cheaper and, as you say, the service is quicker than inside the stadium.
There is a burger van outside Tesco on match days. It sells burgers, hot dogs, jacket potatoes etc, all at prices well below Ricoh prices and much better quality, too.
I got the impression that it wasn't an attempted tackle. He thought that he could get to the ball before the Pompey player and put it over the line for a throw in. Still a stupid move, though.