I just think you're a little nervous b/c of what has happened in the past... and 17 months of sep is a long time. To have him come back is surely a new thing, it's probably hard to even remember what each day felt like when he was around the house. I'm sure there will be some transition time when he gets back in the house. What works now for you guys will be changed slightly when he's home each day. The power struggle stage may begin again. Just remember your DB skills and you'll be fine! Good luck!