Browsing through the above posts:
If the stated Bulgarian indeed stole the funds, I think it is fair to assume both segvec and HBO did not make a mistake in this transaction and it is simply an unfortunate incident.
As such, at his discretion, segvec may choose return HBO the funds first and claim it from his partner once he gets his tax return. If the funds are indeed a large proportion of HBO's life savings, I believe it will be considerate and sensitive action.
Doing so also resolves the conflict between the 2 parties here and segvec will be able to maintain a respectable reputation on this forum for future transactions.
Personally I've done a transaction with segvec and I'd say he is a trustworthy member here.