Aziraphale's mouth twitches, startled and distressed by Andrew's apparent comprehension of what is happening to him, but he doesn't falter, and it's too easy to work his way past the admittedly strong defenses the man - not quite man, it seems - has in place. When it's finished he steps back, looking grimly at the now-stranger.

"Excuse me," he says, and walks past him, as though just brushing by in the hall. He rounds a corner and disappears instantly, rematerializing in his flat, where he kneels down beside Melanie and rests a hand on her shoulder.