Casey never had to gameplan for Davis, so he's not on his radar like the others would be.
The frontcourt is a problem area obviously. He is going to try to put as nice a face on it as possible, say that they are looking to pick up a Center and try to not have Andrea exposed. He's only going to be able to do that sort of thing for the moment. Eventually, the truth will become apparent. It looks like his assessment of the truth will be counted on, and I can see at this point why he would say some unrealistic things, and throw in some red herrings about Dirk being called soft, until he can make his own determinations. Frankly, I'd prefer that he not have to deal with such a situation at all as a new coach, and maybe in the end he won't.