I'm a little surprised anyone with locks would castsequence with Fear. Why not just have all toons fear? It doesn't have a cooldown. If you're running priests, that would be a different story. I run 5 Shadow priests and I use:

Code:
/castsequence [reset=26] psychic scream,,,,
/castsequence [reset=26] ,psychic scream,,,
 etc...
Using reset ensures that my first toon will use the spell before the others do after 26 seconds (which is the talented cooldown)