It's not enough to warrant a return. It'll be done in a month. They're airing two episodes back to back two consecutive days. One on Premiere night (Sunday) and normal time and day on Monday.
I also love CSM but I hope and echo replies I've stated pages back they don't retcon Spoiler: his black hawk missile death in The Truth and use the lame cloning excuse for why he's around (I know they'd go that angle SO HARD). I hope he's just flashbacks only.