It doesn't take a math major to count only two goalies still in Pittsburgh: Brent Johnson and Marc-Andre Fleury. MAF recently got a special glove to wear inside of his goalie glove to protect his broken ring finger. Fleury skated for 25 minutes on Thursday, fielding shots and reporting no problems.
Curry being sent down clearly paves the way for Fleury to return, at least to the role of dressing as the backup.
The Penguins have games on Sunday afternoon and Monday night, it's unlikely either goalie would start both contests, so, barring another call-up, expect to see Fleury in the crease for one of the games, perhaps as early as tomorrow afternoon on NBC.