Yes, we were lucky - at least I count myself lucky that my large, long position was largely closed a few days before the crash.  The profit I lost was less than the loss I would have incurred now (I would have been wiped out).

Of course it is not good at all that Fireball changes the rules during the game.  On the other hand, it is probably better than ICBIT just closing with all our funds being lost.  Remember, we all get angry when our profitable position is closed or we are margin called, but how many of us would leave a negative account alone (and perhaps even open a new one), leaving Fireball with the loss. It is likely that our combined wallets at ICBIT exceeds his private funds, and he also has to make an effort at staying solvent.  We have chosen to gamble our bitcoins on an anonymous, unregulated website.  We have to factor that risk into our risk management.  But that being said, Fireball should be more specific in his descriptions about what he is allowed to do in a crisis.

Disclaimer: I am not in any way associated with ICBIT, but I have made significant (by my modest standards at least) profit on the site, which probably gives me a positive bias.  I currently have money on the site that I would withdraw if I could, but I understand and (reluctantly) accept that they are frozen until the dust settles.