Marcelo Ebrard attended the event dutifully, listened attentively, clapped occasionally, then left hurriedly, so as to avoid a handshake with the president that he dreaded horribly.
Many other prominent perredistas made news with their absence, Jesús Ortega and Carlos Navarrete among them.
According to La Jornada, Calderón spoke as though he were reading a dissertation.
For an English summary of the event, here's the Washington Post write-up. The piece states that the address was given before Congress, but I believe that is incorrect.