Hmm. A court order from Holland, didn't think of that. Was thinking filing an injunction in Federal court in the U.S. would be the way to go. Leaseweb is a Netherlands Company, Nevis is in the Commonwealth under the UK, according to wikipedia page. But leaseweb also has a U.S. office.http://www.leaseweb.com/en/about-us/contact
Looking at block explorer for all the transactions I had with mybitcoin, the money gets sent to my mybitcoin address, then immediately gets sent to another address internally by mybitcoin, then there is a series of internal transfers. It is too complicated to follow by hand, someone would need to write a script to track where all the btc went.
In any case, it should be possible with a little scripting to trace every last satoshi to where it is now using blockexplorer. This should be done ASAP, so we know where he put all the stolen btc. Then we can program a hook into the bitcoin p2p network to find out the IP address connecting with the addresses with the stolen btc, find out where he is (by subpoena), and send in the goon squad.
So the solution as I see it is to
1) file a class action suit to
2) get an injunction, while
3) programmers write script to find out address where btc are, and
4) work on a program to get IP address when bitcoin client with that address connects, so that
5) subpoena identity info of IP address, so that
6) goon squad can physically restrain "Tom Williams" or whoever to prevent further conversion of the ill-gotten gains while case proceeds in court
Now whether the suit is in the Netherlands or the U.S.A. that's an open question, and someone is going to need to pony up for a lawyer willing and able to do all this legal work, probably on a contingent basis, with little hope of reward.
I only lost about 40 - 60 btc (don't remember exactly) so it is cheaper and easier for me to just post this bit of advice and walk away.