Ric Flair didn’t even hang up his boots after getting one of the best send-offs in pro wrestling history, so it’s not like his retirement was ever etched in stone. But considering his latest near death experience five years ago and his being 73 years old, we weren’t taking his recent comeback talk seriously. Turns out we never should have doubted the Nature Boy, at least not on this topic. Wrestling Observer is reporting that those videos Flair’s posted of him training with Jay Lethal (which we dismissed because, you know, they were edited so we never see him get…