*Semiannual re-read accomplished*
There I have been since when the original Japanese chapter was released - wild it was, although not of a storm comparable to the more popular mangas at the time.
Anyway, Minoru is just suffering from a spontaneous emotional burnt-out. His blazing love for AKB and for the stage, combined with the belated confession, eventually became the deterrent to ward himself off from it. No, it is not quite the fear of contradicting himself, but more of the fear of his own experience - a gorgeous chapter of life it had been. We can see in the previous chapter, and some prior to that, whereby Minoru had thought over a normal life, a normal experience, and thus a strong desire to settle for the peace of his mind. Minoru is not Minori, whenever he cannot think like, or, be the Minori, his emotional instability would be observed rather frequently (ye, curse you god, why must you make males so fragile...)
That being said, he is accompanying Alice often - much to his annoyance, though of which he did not seem to mind it in particular. He is solitude for sure, but loneliness would not be the correct word to attach to him.
It was hence a good and satisfying ending - except the (unexpected unnecessary) part where I wish I could see a showdown between the girls as to how Minoru should be divided among them - or conquered solely by one goddess. I would bet $100,000 on Okabe Ai though. Lowest odds, highest gains.