In all actuality Dave, I don't think they need to win to accomplish something.
First, I disagree with you on that they just got "beat". They looked lost and didn't show much effort from anyone outside of Claudio Reyna. Outside of the asskicking the Serbs took today, the US played the worst game so far in the WC. I definetly think they have the potential to play to a much higher level but for whatever reason they didn't come out and play.
Now, I think the US must compete. I think they have to actually give themselves more than a few meaningless chances when they are down by 2 or 3 goals. They need to get in there and score a goal or 2. The match cannot be decided early on. The most important aspect of tomorrow's game is that the United States team come out and show heart.
I think that there are going to be some linup changes that will give them a spark. If Eddie Johnson doesn't start, I may fly to Germany and kick Arena's ass myself. I would not be opposed to a benching of Beasley or even Donovan at this point if neither come out and provide anything tomorrow. There are capable players on that bench such as Dempsey and Arena can't be afraid to use them. No one can be untouchable on this team.
We knew coming in that advancing to the round of 16 in this group was going to be a very difficult task for the US. However, I don't think they have to advance to the next round to make this WC a success. They need to compete. Hopefully thats what they do tomorrow.