How do I revert this modded texture back to vanilla?

[Kahenraz]

I have been trying to figure this out on my own but have failed so far. I understand that it's possible to do this exclusively in xEdit, but I couldn't figure out how to locate new textures to revert with a patch. Then I tried loaded the mod into the Creation Kit, but when I go to SolitudeOrigin, I see the vanilla texture, not the modded one. And the whole area looks very different and has missing assets.

 

What am I doing wrong and how can I revert this texture?

 

The mod is Enhanced Solitude SSE and it has no dependencies, so this should be a simple patch.

I don't like the new ground texture because the moss doesn't line up wit the stonework and appears to be "floating" in some places.

[scorrp10]

The reason CK shows you original textures is this:
Enhanced Solitude has all of its resources in a .bsa archive.    While, by default, CK is configured to load stuff from vanilla Skyrim .bsa archives, it will not look into mod archives.   You can edit CreationKit.ini file in SSE directory, it has a section for bsa, pretty self-explanatory.   But that is beside the point.   

Best tool for hunting down texture issues is 'More Informative Console'

You open console, click on the offending piece of the landscape, and it tells you a number of things - on the right side, it will tell you both RefID and base FormID, as well as whichever plugin was last to modify either.    Also, in the info window opening in top left, you can mouse over a category and press Shift to 'drill down'.    You can check which model (nif) file is being used, and its path, and what textures are used - and their paths.   Once you know which textures those are, you could pull them out of Skyrim .bsa   and have them as loose files, but it will likely produce a result even uglier than what you see now.

 

[AaronOfMpls]

Yup, and here's a link: More Informative Console.