Unfortunately, with the upgrades, that feature didn't come along with it. If needed, just ask a mod to correct the title. I fight the urge to correct spelling in a title.
One of the reasons that the creator can't just delete a thread is because for some unknown reason, the thread is still out there is cyber world. If a mod does it, the thread is protected from some creep getting a hold of it. I don't know all the specifics to it, but Cheryl designed it that way to protect our membership.