Did Romney "panic"? Or revert to form?

Ezra Klein and Jonathan Chait each offer insightful views of the thinking, such as it was, behind Romney's disgustingly opportunistic attack on the Obama administration's response to the assaults on U.S. missions in Egypt and Libya, the latter of which left four Americans dead. But the two explanations are actually somewhat at odds with each other.

Klein takes the verbal assault as evidence that the Romney campaign is panicking.  It has been determined to keep the focus relentlessly on the economy:

Romney launches an apology tour

Romney first charged that Obama kicked off his presidency with an apology tour on June 1, 2009, and he has never stopped repeating that lie. What he meant was that Obama, in his addresses to various allies and sometime adversaries, often acknowledged some fault in past American conduct as prelude to acknowledging fault on the other side and defending overall American conduct, interests and values (see Politifact link below).  For example, in his address to the Arab world in Cairo on June 4, 2009 Obama cited legitimate causes for resentment of the U.S. and the west in Islamic countries:

More recently, tension has been fed by colonialism that denied rights and opportunities to many Muslims, and a Cold War in which Muslim-majority countries were too often treated as proxies without regard to their own aspirations. Moreover, the sweeping change brought by modernity and globalization led many Muslims to view the West as hostile to the traditions of Islam.