Here is a very good piece relating to the error which can happen if we try to defend God’s Sovereignty without due regard to the philosophical implications. Although the writer doesn’t speak of it, his objection to Francis Chan & Preston Sprinkle’s position in their Erasing Hell, that “God can do anything He wants” is an example of what is often called “Divine Command Theory” – an explanation of the relationship between God’s will and ethics one often comes across in Calvinist theodices (defenses of God in relation to evil). While I would disagree with the author’s view that God’s essence is “fundamentally unknowable by human beings” (Scripture does not support a radical approach to our knowledge of God), he makes his point well.
The article is posted at The Jesus Creed and is a bit of a hard read. It’s by David Opderbeck and is called “God can do anything he wants!”