Sounds like he's getting used to you, yeah. Eventually he'll be either totally calm with you, or only a little jumpy, depending on his personality.
I've had my girl for 2 weeks now, and once she stops striking at almost everything, I'll consider that a victory, haha. She's a bit odd for a ball though.
i agree with lotus, in my experience, if a snake isnt constantly trying to bite you, thats a win although i am quite fond of aggressive snakes, theyre a real good way to keep yourself busy and adrenalized lol