How is Oa even back? Relic destroyed it.
"story trumps continuity" and "looser continuity". But then again it's not the first time this was questioned under Johns' writing in previous JL titles.
Yes, in regards to how characters can appear in multiple comics and not have current stroylines affect them. Oa has been destroyed for quite a while.
Geoff Jonhs retconns it, that is how he works.
Its a one shot. Many One-Shots are not canon (sometimes). I think these one shots aren't canon.
JL: Gods and Men one-shots are still tied into the main storyline. I honestly don't see the logic behind that. I highly doubt DC would allow that to go unnoticed if it's considered non-canon.