It appears that the person who allegedly leaked Valerie Plame's name would be protected by federal whistleblower laws in this circumstance.
As is now known, Valerie Plame lobbied and got her husband the job to go to Niger to investigate claims of getting nuclear material. He had no experience in this matter, produced shotty research, and used it as a platform to try to hatchet the President. The circumstances of his leaving the foreign service are unknown, but he was put in early retirement at 48 (with the minimum age being 50) indicating that his departure was not on good terms.
If an individual leaked to the press that Joseph Wilson got the job to go to Niger because of the influence of his wife, that would constitute an abuse of authority and possible misuse of funds, entitling the person who gave out that information to be protected by federal whistleblower laws. Spouses getting jobs for their husbands or wives is clearly unethical and in some cases illegal, and pointing that out in public entitles the whistleblower to protection.