...I give you Abaddon wearing a Sam suit. Because, dammit, he did NOT get his tattoo back and if TPTB handwave this and say "Oh, it came back when Cas healed Sam," I'm gonna be nine kinds of miffed. But not surprised.
(click for larger version)
I mean, because, REALLY ... if angels can handwave anti-possession tattoos onto a body, why haven't they done that all over the world? Healing a wound is not the same thing as putting a sigil or brand or tattoo on someone. So fart on that idea. Annnnywho ...