I just walked away and came back to the area and redid it - worked fine in the end.
Found a game breaking glitch in Daedric quest the mind of madness. Good job I had an autosave, as otherwise I would have been fucked.
I shall try to be as spoiler free as possible without tags, so everyone has warning. There is a part in that quest when you turn a wolf into a goat. Whatever you do don't perceive the goat as a threat and punch it to death!
If you do, the rest of the sequence will not work and the bastard stays dead. Meaning you are trapped.
My own fault I suppose for knocking the goats face in, but how was I supposed to know!