Decursive replacement
I went raiding yesterday to Molten Core with my undead priest, and with the help of someone from the guild found a good replacement for Decursive. And the beauty is that you don't even need to download anything, you just make a "Decursive 2.0" macro saying
/cast [target=mouseover] Dispel Magic
What that does is when you press the hotkey for the macro it casts Dispel Magic (replace with the name of your decursing spell if you ain't a priest) on whatever target your mouse is hovering over. You don't need to click with the mouse to decurse. In a big raid I just set up CTRaidAssist to display all curses that I can dispell and just whack-a-mole, hovering the mouse over the list of players and spamming the decursive macro button. In a small group I could even target the players on the screen, as curses change their avatars color. It isn't quite as fast as the old Decursive, but pretty close. Nifty!
See if that works.