im guessing you need to lpace the lord vessel? of have you placed it and hit him now he ran away eitha way, the hole where frampt was will take you to firelink shrine and the kiln, so dont have to wrorry about that
I did this, not sure why. Weird story, I was theorizing that running in a specific direction in the abyss could lead to some secret. Needless to say, it doesn't. I got so mad though, I turned the sword on kaathe! He was to receive all my wrath! Well he got scared after a few hits and left. Poor guy...