I'm saying he owed us in both the legal and moral sense. I do not know whether (or if so, when) Eduardo has paid taxes on his Facebook shares, so I cannot opine on whether he still owes us under the laws currently in effect.

Morally...I think he's a freeloading bastard, and I look forward to the day he goes to jail in Singapore for violating one of their numerous and extremely punitive criminal laws. But I do not think he has a moral obligation to pay additional taxes if he has satisfied his legal obligations.