Uninstall Wolves of Steel?
 

Is there a way to uninstall just the mod without uninstalling the entire game?

If I have to install the entire game do I also have to delete and lose the data in the documents folder?

I'm not interested in trying to fix it. I've already spent way more time trying to get the game running than I spent playing it.

Best course of action when uninstalling any megamods/total conversions is to completely wipe out the game and then reinstall it, and yes I'd purge the data in documents folder too.

Test for deletion.