Your guess is as good as mine -
Any of a number of things could happen:
1. BOS could realize on Friday that their CEO is not getting bail and say Fyou and reopen business. (They might have to do some kind of limited withdrawals each week or something as I doubt they can handle losing 75% of their money in one day)
2. BOS could decide to work with the US government and try to get their guys bail. This could go on weeks or months. Part of the negotiation might include paying US players and/or some of the tax the US wants. (I have not figured out how the US wants 4.4 billion in taxes on 3 billion in wagers. Even if every wager won, the tax would be 140%. IF BOS's hold is 5% (Really probably 1 or 2% after expenses) their profit would be $150 million on those wagers and I would think tax would be about $50million - of course a huge portion of the 150 is expenses)
3. BOS could simply go out of business and declare bankruptcy. The combination of millions in legal fees, a stock that will be worth 50% when it reopens on the London exchange, and a huge run on the accounts can not be good for solvency. The only time I've been stiffed was by globalcasino back in 97 or so. They were a little book (I am guessing as many do not remember them) but they always paid. They also seemed to leave lines up during games. But anyways, they were indicted by the same region in Missouri. They never got back on their feet and although they kept saying they would pay, each time I called, they told me their accounts were frozen. I did go as far to check if their was an indictment and their was, but I never figured out if they were really in Costa Rica or St Louis...
I would say you have a 66% chance of getting your original deposit back and a 25% chance of getting your full balance if you are up.
It is also possible the government in England could become involved. English citizens are already pissed about the US extraditions about Enron... If they get involved it could be months and months
-Sean