Sayid
Who thinks Des talked him into letting him out of the well (you can kill me just as ‘well’ outside as inside) and Des took him for a little stroll in Sidewaysville to Nadia, turning the ‘good’ on kinda’ like may be happening to Claire.
(I ponder about the ‘good’ ‘cuz I thought him chosing to off Keamy, etc. w/glee showed he always was that chicken killer with a dark heart.)
Not only did he let him out of the well, but he cover for him with Flocke. Desmond uses the exact tool to bring Sayid back to the good as Flocked use to turn him evil. NADIA
Actually Desmond used the same method Jacob used on Richard – reason and choice… or free will (with the exception of the baptismal/dunkin’ donut incident – although we have not been privy to the remainder of the conversation and scene, and Sayid did take awhile to get back to MIB…). I don’t believe that Sayid actually helped him out of the well though – maybe he gave him a tool or tool(s) to escape – sort of like what he did with Jin in the Alt.