I could not read the article.  However, I have found that it is impossible to change someone's behavior, they need to do it themselves.  I offer all of my employees two rules:  do your work, work together.  As that can be too arbitrary to some, I break down those into bullet point expectations.

Do your work:  depending on the job description, this may already be outlined.  However, I still make sure to clarify what this means, especially when there are lull times.  After all, idle hands...

Work together:  this is the main point of passive aggressive behavior.  We don't all have to be friends.  We don't have to like one another.  However, as most states have some form of "at will" work provisions, there is little to require that we need to keep bad employees.  I greatly believe in corrective action.  I believe that if you have set down good ground rules, you have the ability to speak with your employees to take corrective action.  

I have made mistakes in the past and believed manipulative employees in the past.  I did not realize until it was too late that I had been manipulated.  The ring leader ended up making such a hostile work environment that not only did I leave the employer, but the entire team did (including the ring leader) after I left.  Open communication and active listening is the best method of dispelling passive agressive behavior.  Don't be afraid to do verbal and written warnings.  The offender will not take it kindly, but they will understand that you mean business.