I still think it was Lawrence and not Stern that got the card last night, at least that's what it looked like on TV as they zoomed in on Lawrence afterwards. It was for wasting time.
Lawrence also picked one up against mexico last Sept so he might be out too.
The only thing is both Lawrence and Rahim picked up yellows in the 1st round against Dominican Republic, so if the cards are carrying forward from round to round then they should have been cleared already before this match.