User blog comment:FairyRaven/Fairy Tail Chapter 410: Memento Mori, Review and Commentary/@comment-24490201-20141123170233/@comment-24467372-20141124160224

Jellal isn't heavily wounded though.. After breaking the illusion,all he had on him were scratches..The OS are wounded(except Hoteye) and Meredy is perfectly fine. For the others....they had lots of times to heal and get back up. If Lucy can continue to fight and stand after taking A28,then I'm sure Midnight and Cobra can get back up on their feet after 40 chapters. And besides,Jellal is the main force of their team... If the guy can get up and fuse with Etherion after getting slashed by Erza in the tummy and get relentlessly beaten up by DF Natsu,then he can fight with slight injuries. He is known for having an immense amount of stamina and durability..I wouldn't call that BS.

Disappearing after saving them? I really don't think so. They either won't come,help destroy Face or fight Mard before a plot device(Most likely Lumen Histoire) saves Natsu and Gray before they come in to fight E.N.D

I saw a theory about another possibility. Gray said "Future" before they disappeared and Natsu had the same "no eyeball" state we saw him in when Silver froze him at chap 366. It's possible that Gray froze Natsu with his DeS magic so that Natsu would be unaffected by Memento Mori,a spell that works on Curse(Demon) Power... In that scenario,I can see Natsu taking out Mard and saving Gray,who in turn comes in to fight E.N.D.

All of these are possibilities. My beef in this discussion is the idea that OS and Jellal are "too wounded to fight" and them fighting would be BS...I severely disagree with that and think that it's a sugarcoated version of saying "I don't want to see them fight"