The way I figure it, what's good for the goose is good for the gander. If cyclists can't pass slow cars, then perhaps motorists can't pass slow cyclists unless they change lanes? In this instance, though, I'm certain Logan police will probably ticket cyclists for impeding traffic. The bike program coordinator at Utah State University who was interviewed for the article also invites cyclists to take the lane -- and predicts motorists might try to pass to the right of cyclists who do this.
Here's a short video of me filtering to the right of stopped traffic in San Jose, California. (Yeah, I ride my bike on Saratoga Ave, as well as on El Camino Real, The Alameda, Santa Clara Street in San Jose, and the entire length of Stevens Creek Boulevard.)
What do you do at intersections? Do you filter forward? Or do you queue up behind the other vehicles in the lane and wait your turn?