At the time that I wrote that, IMDb didn't credit him with being in any of the Season 2 episodes, whereas all of the other actors were credited. Now, he's credited with one episode, the Season 2 premiere. Either they invited him to do a few scenes for the premiere or they (re)used some previous footage that they shot of him for Season 1. Some of the other actors from Season 1 are also only in the Season 2 premiere. They're probably all cameos in Dolores' memories/dreams that serve to kind of recap Season 1 for the viewers.