Sneak passed the save, but is still Entangled.
The creature yowls in pain as Arytiss' flames sear it and clamp down on him. He speaks out, but from the sound of his words, he's talking to the undead.
Svent irlym! (Basically: Kill them!)
The sneak then tries to dose the flames engulfing it, but only manages to agitate them.
Both Arytiss and Sevra get AoOs on the Sneak. He's still on fire, something he is not happy about.