Yes, it actually does point to it. In my personal experience it does, anyways. There are times, and have been here recently, where just eating meat causes reactive hypo in me. Those are some of the worst times.
Every week is different for me, too. You never know with this illness when your going to react to something else.
Yes, about your answer considering hypothyroidism. Lab ranges need to be changed to reflect the current knowledge they have about hypothyroidism. So you can fall "in range" and have subclinical hypothyroidism.