Having sat in the White House press office when the pressure hits, I have a good sense of what's going on (even though the addition of 24/7 cable, the dimunition of the old get-it-right-first journalism and the pressure of the Internet didn't exist back then and certainly has dramatically changed the dynamics ). Still, there are principles for handling crisis that always come into play. For example, don't speak before you know the truth. Not always easy, I know.
Putting it out there, I'm not a huge fan of Carney at the podium, never have been. He doesn't have the gravitas of a Marlin Fitzwater or a Mike McCurry. To me, he doesn't portray strength at the podium.
So today's story in Politico -- http://www.politico.com/story/2013/05/obama-scandals-91389.html -- will tell you what he's been going through in the last several days.
Then, see the video linked below. Jay may have gotten it right back in 2006. He probably never spoke truer words.
http://www.politico.com/blogs/media/2013/05/jay-carney-former-reporter-163950.html