2: Gold tooth, perhaps, in satellite? (7)

6: God! Get real! There's no point getting upset (3)

7: Technique for picking up new material? (5)

8: Greenback entrances Microsoft boss (4,5)

11: Fill-in professional almost rewrote the column (5)

12: Anyway - no! (3)

13: Moscow politician revolting in style (7)

1: Unscripted part for head librarian (2,3)

2: Crew member is one in operating room (3)

3: Al's gamble on outcome of sports (4,5)

4: Principle unaffected by revolution (5)

5: Managed in lower Antwerp (3)

9: Bad call involving entrance to our neighborhood (5)

10: Authority, for example (sic) (3-2)

11: Non-clerical song (3)

12: No one told sister (3)