If that's the case...

Warlock's Flee the Scene (Dimension Door +Invisibility for the flatfooted) would be nice, but they don't ride as a skill.

You are going to need a way to flank, it's still the most viable option. Screw it. You see a teammate adjacent to something, just teleport for a flank. Someone on your team has to be melee, and you don't need their consent not to suck.