I`ve rewatched their actual second goal, looks like a deliberate ploy to (at best) block-off Lovren with one player (Brunt?) allowing Ollson a free run at the ball. Refs should be taking a good look at this kind of thing in video preparation. It`s like a basketball or American football pick-play and illegal.
Also, the tactic of standing a man right in front of the goalkeeper at corners is very low (I know we have done it in the past), and there should be a foul given every time that man contacts the keeper. On the same second goal I saw Fletcher making a big deal about not impeding the keeper, but their gameplan on that set play was obviously elsewhere. Pulis is of course a master of this sort of tactic, it is effective, but the lowest form of football. At least we only have to watch WBA twice a season, pity their poor fans who can look forward to seeing no football all season, just the prayer of a goal from a set-piece ever now and then.