I don’t know if they can get off shore assets, but at least they know about them now.
Here’s the framework you use to understand this whole thing. Sociopaths are at their most dangerous when they’re called to account for their behavior. It offends their sense of entitlement and it’s perceived as a mortal insult. Every time the Goldman and Brown family’s lawyer collects some of the money he’s been ordered to pay them, it’s a personal insult and he responds accordingly. Their lawyer found this dealer a few months ago. So this was a lot less about ‘getting back his ‘stolen’ stuff’ and a lot more about keeping the Goldman and Brown family from getting any of the proceeds. Viewed in that context it, and much of his other behavior, makes perfect sense.