I know what you mean, but this was ranting to himself not shouting to the players.
It was obvious it was a sort of he's let me down again sort of face if you get me? But he keeps persisitng with him, when he obviosuly knows he's poor, judging by him on the touchline.
Whereas when Ben Arfa lost the ball in comparison, it was bordering on ridiculous with how Pardew went on.