Did you read? He owed 120 BTC he intends to pay 20 BTC of that.
Not quite. A good portion of that is owed to himself. Running the numbers, 20 BTC seems about right, assuming that he was telling the truth about the number of shares that have already been payed out.
Unless there is a compelling reason to change that number, as the investigating staff member in the scammer investigation, I am ruling that 20 btc is fair to all parties and that if it is paid out in a reasonable manner, he won't receive the scammer tag.