Since I have spent the last couple hours online reading about what is going on, and also have some personal knowledge about the state of online poker in the United States I thought I would tell my understanding of the current situation.
Since it would be extremely impractical to try to impose a law making it illegal for U.S. Citizens to play poker online, the strategy of the DOJ was to make it illegal for U.S. Financial institutions to do business with Online gaming sites, this was the primary intention of the UIGEA legislation. The result of this legislation if successfully imposed would be that no one would be able to deposit or withdraw thus making playing worthless. To get around this legislation the poker sites utilized a strategy of jumping from one payment processor to another very quickly so that no one could be exposed. They would pay many small companies money to act as an intermediary between the player and the site by disguising payments and cashouts as sales of merchandise of any kind ranging from things like jewelry to golf balls. Most players really had no idea this was going on since they probably pay little attention to the fact that their deposits were to some random company name like RJC enterprises or J&J associates (made up names that resemble some of the many used) and not to "Poker Stars" or "Full Tilt." Similarly checks would come from random company names, in almost all cases a different company name would be on every check. Even if you got more than one check in a week they would often each have a different company name on them. It is this method of payment processing that is the reason for the indictment. It is my understanding that the F.B.I. recently impersonated several of these payment processors to make their case, and also are relying on testimony from some former employees of the poker sites. Even though some people in certain states are able to log in to certain poker sites it is my understanding that within 24 hours it will not be possible for anyone in the U.S. to play real money poker online at Pokerstars, Full Tilt or Ultimate Bet/Absolute. Even if you were able to, it sounds like the assets of these sites have been frozen so you would not be able to get paid even if you won.