Because he already did?
And nefario isnt like pirate. He already paid a good bunch of money back. I never heard that pirate did this or any other scammer. It would hurt their scammearnings. So nefario isnt a scammer of this kind. He only handles this all not very well. If he really would be a scammer the only earning he could have get would be the user money lying on glbse. But he paid back already a good part. The assets are of no worth to him. So no earning from there too.
I think nefario should name the guys that hold the money not theirs but are from other users. Keeping other glbse-users money isnt showing the best character. And they should at least now know that keeping it will in no way put pressure on nefario. Its not his money so...