The issue is how you are interpreting his words. Just take him at face value. He sat Morse for a "football decision". Now Morse is starting. You can talk about what it all means if you want, but you don't know. No need to guess.
Now, if Morse is benched going forward or the oline starts struggling overall, then some additional discussion is warranted. But honestly, I don't see the point in making mountain out of a mole hill as things stand.