It would depend upon whether or not that someone was himself indebted to the same king, and whether his actions were in fact a furtherance of that same king's overall plan and desire.
God is bound, in a very real respect, to the laws of justice, even though he is their author. That's because he may not contradict himself, and at the same time he must be perfectly just. Therefore it is possible for creations which he loves, due to their having free will, to fall afoul of those laws and to reap the consequences of doing so. The debt to the king represents the justice which is due to sinners. The payment of the debt represents God giving his only begotten son over to torturers and executioners in exchange for your being loosed from the trouble you've gotten yourself into vis-a-vis God's just laws. He cannot simply say that in this case, because he loves you, he will disregard his own just laws. Someone must pay the debt that has been incurred. And the debt is so great that only the ignominious death of the man/God on the cross will suffice.
