It's the first 2 feet high of a section of wall that has a concrete sidewalk butting up to it.
It's caused, I assume, by the backsplash of water from the sidewalk.
There is no spalding where there is no sidewalk next to the brick.
I am fixing the water problem by installing gutters and hopefully that will stop future spalding, but what to do about the existing spalding, I do not know.
The brick is about 40 years old and does not have a plain flat surface, but has a random splotchy design stucco like coating on the surface.
As far as cutting out the bricks and replacing them, I have not been able to find any brick that even comes close to the look of the existing brick.
Some of the brick has flaked off as much as 1/2".
The area affected covers about 8 or 10 square feet.
Someone suggested painting all the brick, but I'm afraid that might introduce other problems such as the paint peeling off, etc., not to mention it would probably give it a rather plain, maybe even ugly look.
Just not sure what to do about it.