The code and production database is available (with all the users and projects), so you'd be able pick it up right where it left off.
I was going to write up a post-mortem but haven't gotten to it yet. Anthony Franco's comment on HN was pretty spot on: https://news.ycombinator.com/item?id=10940729
Would like to reiterate (as I said on the original launch threads on HN), OpenHunt had no animosity towards ProductHunt. The community (including me) had some critiques against how PH was being run, but instead of constantly complaining about things, we launched an experiment to see if things would be better with an open source community.
It didn't work out this go around, but I'm hopeful another team can do better.