They extended the effectivity of this at least twice--most recently to produced before 12/11/11, from what's been posted here--and haven't extended it since (again, form what's been posted here). The total number of vehicles affected may be represented by all the posters in this thread reporting the problem--we really can't know.
I was not happy about having this much surgery on a five month old vehicle. But the alternative was worse. I don't think they had to drop the cradle to do it but could be wrong.