i fixed the coding - i was in bed already when i uploaded the chapter and then usually the light's out by then, and i couldn't see the keyboard.
excuses, excuses, ahem.
i always see sirius as someone who knows more about dark arts than others simply because of his family background. i also see him as a more impulsive, emotional character than remus. someone like him can understand severus in his demented state better than con-committal, diplomatic remus ever could.