Meta's biggest swing at creating a social network for VR looked like it was dying a quick death in June. Horizon Worlds, a platform that Meta said would be deemphasized for VR in favor of mobile earlier this year, was going to disappear from VR on June 15. And then, yesterday, Meta changed its mind. Sort of. The original news, which broke Tuesday, was a shock to people like me who thought Meta would at least keep access to certain community-made VR experiences, like AA support groups, running in Meta's own Quest headsets. Andrew Bosworth, Meta's CTO, apparently changed course after an AMA where he announced that existing VR apps in Horizon Worlds would keep running. For now, at least. "We have decided just today, in fact, that we will keep Horizon Worlds working in VR for existing games, to support the fans who reached out, like yourself, who really care about that. Those are the Horizon Unity Runtime games. They're not going to work on mobile. They'll just be working on VR.…