I think this issue will sit better after #10 next month. I bet a big payout is coming in regards to the Cap/Ian relationship, which wasn't built up for nothing (hopefully). We absolutely need to see what Jet does next... Great series!
This happened to me last night. As I was trying to read Superman Unchained #2, I kept dozing off between panels. I did finish it, and I even boarded it, but now, this morning, I can't remember any of it! How bizarre.
This doesn't necessarily mean Robinson is leaving because of DC editorial issues or whatever. Earth-2 was his only book. 17 issues (+ the annual) is a substantial run, and it allowed him to build up the world from scratch. A good writer could very well pick it up and take it to good places.