Vanguard Monks

This is my first experience with FD in any game as most classes I play never seemed to have this ability.  Usually when I hit the easy button ... I mean FD, the mobs walk around me for a second and then leave.  Sometimes, however, I will have a mob continue to hit me.  Is this working as intended?  Usually if I get up and then FD again, the mob that was hitting me stops.  Also, when I FD the mobs will go back to where they came from after a short while.  Somtimes, however, they camp over me and don't leave.  Is this working as intended?

Sometimes when you FD you will still be stuck in combat (have the crossed swords as your icon).  If this is the case, sometimes a mob will hit you once or twice more.  After that, they will stop.  They will also stand over you in their combat idle animation.  I do not think this is intended as FD is supposed to remove you from combat and I have a feeling they will fix it eventually.  For right now, you just have to hop back up and FD again until you lose combat. 

I don't think FD is pass/fail any more. I think there are grades of success.

i expect this is intended.
the mobs that remain 'agro' on you simply have not be hate wiped completely.
This was the same in EQ, you could feign and get back up and they re-agro from distance. sometimes you had to re-feign a few times to clear agro on all mobs.
in Vanguard its just a lot more obvious :p and they dont even walk back, which makes pulling very easy at times

Also its best to turn auto attack off just in case, not sure if this is the prob in vanguard but in eq1 similar things happened and if you turn auto attack off before you fd it usually prevents this.

How do monks sneak?  is it an ability we get later on?