Did Kanade Oe break the "4th wall"?
Though it's not explicitly stated either way (imagine in a series, if they were to mention that they broke the fourth-wall; that's some serious meta fourth-wall-breaking), the general consensus in the fan kingdom is that this is an instance of the 4th wall being broken.

As you mentioned, chihayaburu (千早振る) a makurakotoba meaning "wild"&#91;1&#93; or "vigorous power"&#91;2&#93;, which can be synonymous with "impassioned" or "frenzied". So, in English, it's not unlikely that the word "frenzied" could be (loosely) considered the title.

As I mentioned, though, there are several unofficial sources (some fans, some not) mentioning this (sudden) break in the fourth wall.&#91;3&#93;&#91;4&#93;&#91;5&#93;&#91;6&#93; So, based on the closeness of the words, and the fan/community reaction to it, this seems to be a "breaking the fourth wall" scenario.