Hey, I don't know how useful this is, but it's kind of an exploit. I found it today while in AV, a bunch of us were hacking away at the alliance's tank, when he used intimidaing shout to fear us all away.
Now as I used will of the foresaken to stop the fear, the same little blue animation appeared around everyone running and they all instantly stopped being feared. I was the one who the warrior was targetting when he feared.
What I'm saying is, if you are undead and you are feared, using WotF will bug and stop everyone's fear.