Based off a suggestion I received, I decided to NPC TaintedTruth's character. That way, if he does return, he is able to pick up the story again. However, because I'll be NPCing his character, the story will have to take a bit of a different turn than TaintedTruth and I had originally planned. Hopefully everyone else is still planning on being actively involved and the group Rp can continue to thrive, as it has.