...and Petey has reverted to his old ways it seems.
He's been back for a day and a half or so and already, Petey had dive-bombed me 3 times - twice yesterday and once just now. He does generally wait for there to be some type of kerfuffle to happen and then takes advantage of a few moments of confusion while we assess which bird is where to make his move. It's calculated. Unfortunately for him, both of our attention when we try to figure out who's where is mostly put on him.
It's sad that he came back to his old ways, but I guess in his head he no longer needs to be extra nice to me to get what he wants since the one he wants the most is back.