Does the Euro's spindle nut have a notch that you hammer in, like on the Civics?

If so, then you need to dislodge the notch using a flathead screwdriver then unscrew the nut off. You should replace it but you dont really need to, just hammer a new notch at an undamaged section.

U can get large nut sockets from auto shops that can remove the nut, or just use a massive spanner