Need to reset Eagon questline state

Essentially:
- I don't want to complete a specific map on the atlas
- I got unlucky with the Eagon questline memory map chain, it went through that map
- As far as I know, there's no way to reset the quest state or do anything about it: failing a map only makes it cursed

So what I am asking is whether I could have that quest reset or do I have to request a full atlas reset and then recomplete it.