Indeed, the usual speculation appears to be strangely missing.
"A spokesman for DigiNotar told The Register that it would “be difficult” for him to respond to questions about the security breach and the resulting effects it has on end users. This only seems to reinforce the notion that CAs see themselves as too big to fail and aren't accountable to end users."
It would certainly be difficult if he strongly suspects that the breach was the work of an intelligence agency from a "friendly power". Especially if that power had a lot of influence over control of the net. He might very well feel that keeping stumm under the circumstances might be the lesser of the two evils and that he just has to swallow the fact that the rest of the industry are not too impressed by the lack of information from the company. He indeed may fear that they will end up very "accountable" but for the wrong reasons and not to the end users in the industry.