Unless Pontiac has a plan to replace the G6 and Vibe with RWD vehicles then they are in no way "going RWD". At best they are going to add a RWD sedan along with the current coupe and roadster. But the volume models (and thus the bulk of their sales) will remain FWD, just like every single other non-luxury brand on the planet.
I think its amusing that the article manages to contradict itself, first stating that a Firebird is under consideration, then saying it is not going to happen. Nice.