Somewhat Calvinistic, btwUtter nonsense! If this were so then it would be meaningless to say that God is good. God does not get to pick and choose when to be righteous and when to be arbitrary and an arbitrary (i.e. unjust) action would not become just by virtue of the fact that God is the one who performed it. On the contrary, if God did the unjust, He would no longer to be righteous, by definition.
What is moral for God that is different than what would be moral for anyone else has only to do with God's authority, not some sort of different standard. It is not within the purview of a Sergeant to declare war but it is within the purview of the Commander in Chief. This does not mean there are two standards of practice within the military. The same code of conduct grants the CiC more authority than it does non-commissioned officers. Likewise, God has the authority to end a person's physical life at whatever point He sees fit. All men deserve death, Hawkins, every breath we take is a mercy. God does not owe the world an opportunity for salvation and it is not out of bounds (i.e. unjust) for the Judge to call a person's debt due, especially when that debt is owed to the Judge!