Moya said:
Thorfinn seems to have forgotten not only his dream but also his past life, he must feel empty and doesn't mind dying.
I agree, he must be suffering from some sort of hysterical amnesia. I feel a bit bad for the Lord's idiot son now, because when Thorfin see's a sword coming at him, he's going to at least partially snap out of it, and probably thoroughly snap the kid in two.