There have been a few criticisms following Obama's meeting with Calderon, as well as the latter's comments about Ambassador Carlos Pascual (including from myself). I talked to a former diplomat about it, and although he never worked in Mexico, he explained that what likely occurred is the following: Calderon phoned Pascual shortly before his interview with El Universal, warning him that he would be saying some things in order to pander to the public and address the Wikileaks cables. Pascual would not acknowledge any of this publicly, yet would be reassured by his president that all was fine.
Then when Calderon and Obama met, they could get down to real business and not worry about the Mexican president losing any face. Which he didn't, Obama and Calderon made progress on the trucking issue, and Calderon went home happy with America again.
If this is what happened, well then, interesting.