I can't say anything about his choosing not to attack you, except maybe he knew that would lead to an end to the truce. You're still an Avenger, Thor. An attack on you would be an attack on the rest of us. As for the rest...he's been here for about a year. Changes to his appearance wouldn't be that strange.

Ah...different kind of spirited. He enjoys his pop culture references. [Possibly a little too much.]