I believe the sudden vanishing of his shirt is specifically referred to as "angel mojo" in the novel, lol.
8D Omg, is this a real thing, or are you punking me? If I pick up this novel, will I REALLY find a minimum of one scene in which his shirt is suddenly noticed to be gone and it's referred to as "angel mojo"?
Seriously. For reals. It's in the novel called "Soul Thief" later in the series.