He was doing his job. He has tons of people under him to do the actual work.
That's nice. His job is PR, huh? I'll contrast his behavior with that of Haley Barbour, who we haven't seen in days because he is likely actually doing something. Blanco is on every other channel just like Brown, postruing, spinning and denying. I would imagine Barbour has "people under him to do the actual work" as well. If that's the case, what the hell do we need a FEMA director for? To talk to reporters on television?
No communication and the governor not leading has done a lot of the damage.
One of the things the wildland firefighting knows is that it is the local commander that has to make the decisions, and the system is designed to help and back that person up with supplies and support.
There is no Incident Commander with backed up authority, by the looks of things.
Until the governor puts some teeth in the National Guard, or appoints someone with the power to make decisions she's incapable of doing, things will be bad.