I think they'll mostly leave those at the front with the safe standing rails alone, they'll target those higher up the stands and towards the corners. That's where they've had complaints from.
Anyway, I'm sure that as soon as they manage to get a block or two of people sat down someone will just start a "stand up if you hate Woolwich" chant as usual and that'll be that!
Hopefully!
Lucky enough to get row 5 so buzzing but really don't want to sit or get thrown out!