As this is a personal debt, I'm very sure that you will receive adequate compensation if you take legal action.
What's his address to serve a statement of claims?
According to my sources no one will ever receive any adequate compensation.
Graet is almost broke. His promises are just words.
9 month ago he said he would repay bulk of the loan by mid 2014. Now he promised 20BTC to all of us, which is pathetic. By the way, he still didn't pay those 20BTC. 20BTC is 1% of 2000BTC. According to my sources Graet bought back about 7000 of his shares, which is 70BTC. So he still owes 1930BTC.
I know how much his "btc businesses" make. It's very little. If you sue him, you get almost nothing after all legal fees.
Write this off, he is really a degenerate just like Justin00 says.
According to my sources in summer 2013 Graet had BTC securities worth at least 1000BTC. Almost all of them were scams and he waited until October or Novermber when it was too late sell them.
Graet himself admits his garbage portfolio lost 500BTC value in October. In summer his garbage portfolio was worth much more.
I'm not going to list what he had and how much. I can say I verified some of the data my sources gave me. It all was correct.
We can hope for very little compensations. Suing will give even less, because according to my sources he's almost broke.