James Drogan

This item from Dan Gillmore's Blog prompts me to opine that Miller's motivation may have been that she felt compelled to restore herself to the front pages after 85 days in jail.

Dowd's line

Judy told The Times that she plans to write a book and intends to return to the newsroom, hoping to cover "the same thing I've always covered - threats to our country."

suggests that Miller is planning to cover herself.

In a larger sense, however, journalists seem imbued with this haughty hubris that they are above the law.  Fitzgerald, to his credit, has said no.