Just as the debt-forgiving creditor in our Lord's parable had to bear the burden of the forgiven debts
Our Lord says in the parable: "He freely forgave
them both". Where does He say in the parable that the creditor "had to bear the burden of the forgiven debts"?
This, again, is human justice being projected on to Divine Justice.
For an Orthodox perspective on this, I suggest the article "On Divine Justice"
by Elder Paisos.