[TheScorpion]

IIRC, John Scott will still have to play for the Pacific at the All-Star game (see: Sandis Ozolinsh):

Sandis Ozilinsh was traded from the Panthers to the Ducks after being voted in as an Easter All-star representative. He chose to skip the skills competition where he would have to wear a Panthers jersey, which he didn't feel would be appropriate, and was fined for it. But he played in the game itself for the Eastern team.

However, Dave Tippett said the other day specifically that John Scott would be called up again so that he could participate in the ASG. What I gather from that is that if he is not on an NHL roster when the NHL breaks for the ASG, he is not eligible to participate.