Possibly. Today I wanted to find a discussion thread on Fi vs. Fe started by IndigoSensor from a few days ago. The thread appears to have been magicked into oblivion.
I checked my post history to see if I'd simply (INFailJ style) "misplaced" the thread, but even my post history no long reflects my thread contribution.
I messaged Arbygil to ask if it was possible that SuperMods could perform a forum biopsy like that, but before she responded I discovered the sticky thread that listed their duties (i.e. privileges) and apparently they can.
If it's legit, it's alarming.