No, I believe they left Salem in the mid to late 80s and were still out of town. Not many of the current Salemites were around during the Possession storyline. Aside from John and Marlena, Abe, Sami, Kristin, Maggie, and Victor would be the few to remember it. Tony I guess turned out be Andre at that time. Brady, Belle, and Abigail would have been toddlers. EJ wasn't even born yet.