The game not loading at all, and your character and world being corrupted, are two different things. Not sure why your game wouldn't load at all. You're saves could be changed by the mod, which might prevent loading - it's a pretty bad mod if it's done this.

You could try disabling all the options in V+ back to vanilla if you can, then loading your world and character. If the mod has any sanity it should (hopefully safely) remove it's crude off your save files since it doesn't do anything anymore, then you should be able to close valheim and remove v+. I have no idea if this actually works, if not V+ is a worse mod than I realised.