Go ahead and fix the roundabout. Homer saw it and compulsively removed a few stray junction nodes, which is why his name is on it, but left it for the community to manage. He also felt that it was obviously too big.
I was checking that intersection again. I noticed at least two turn restriction that needs to be fixed (East of the roundabout) and the East and West bound do not match correctly with the GPS tracks and the pictures from the article.