Flopping against several casting mobs...

[Ennewi]

As a Shadow Knight (assuming with no clickies like root nets or stun idols), maybe check to see that the neighboring respawns aren't casters, then run the small train to the corner farthest from and fear each of the aggroed casters, snaring beforehand if mana/hp allows, then feign death ASAP. Depending on your level advantage, it shouldn't matter if they get feared into other mobs; as long as those aren't casters too you'll have a better chance of getting a clean FD off.

Of course, this would mean having (invoke) fear already loaded or blood ember boots on your person, which does seem like a waste of a slot/bagspace, especially in most dungeon zones. But in emergencies, other than bash, fear is the one reliable way for SKs to interrupt casters.