There's a warrior on alliance claiming that he tested Intimidating Shout, and that it kept disconnecting the realm. Like 5 times in a row, when he was using it just to see.
If you're disconnecting and hate the rollback, do this: make a macro, put .save in it, and put a very common ability to it. I have a mount macro with .save, /use Purple Elekk. Saves your character's state on use and can restore you closer to your state than the rollback would on disconnect. To me, it is a MUST with all the disconnects, as i've lost hours of progress from these rollbacks.
If it turns out that fear mechanics are DCing the realm, it may be helpful to advise everyone you see of the situation until its fixed, so that people aren't DCing the realm all the time.