Wanted to give an update on my Boardsmith board that I kinda messed up by putting baking soda and water on it. (turned the surface a little gray and weathered looking)
After the great advice on sanding it off, I tried it. I just went with hand sanding and it has turned out great. Took several sheets of sand paper because the oil and wax just kept gunking it up, but it worked. It is so nice now, because I sanded off the grain that had raised with use of the board. It is so smooth now and only someone looking for the change in color might notice it. I think with oiling and use, it will all blend and not be noticeable at all.
The side that I sanded turned out so nice and smooth, that I just sanded the other side a little too, so it would be just as smooth. I think that might be a once a year thing. Just lightly sanding my end grain board to smooth it out a little.
I think in the future, I will clean with salt and maybe a lemon or lime.