Disorderlies?

A Pennsylvania man was charged with "Disorderly Conduct" after writing the "f-word" (I won't write it here, I have a clean record and want to keep it that way) on the Memo line of a check he used to pay a parking conduct.

The man, David Binner, later apologized, and charges were dropped. OK, except I don't see how writing the "f-word" could possibly be considered "Disorderly Conduct." From the all powerful Wiki Disorderly Conduct comes when,

A person who recklessly, knowingly, or intentionally:

(1) engages in fighting or in tumultuous conduct;

(2) makes unreasonable noise and continues to do so after being asked to stop; or

(3) disrupts a lawful assembly of persons;

I don't see any of the above in writing a bad word in the Memo section of a check. Not even a little. In fact to me, and lets face it, that's all that really matters, it seems like a valid, if ineffective means of protest.

Also, what adult could really, honestly be insulted by some random person writing "f" in the memo section of a check? I mean, enough to file charges insulted? Sticks and stones and all that right?

So to recap, a man immaturely vented, someone immaturely claimed to be offended, the man was falsely charged with a crime, the man was either forced to apologize or did so honestly, and all is well.

The larger question, is why did anything happen besides cashing this man's check?