Originally Posted by def28
It's confirmed that the X-Men are disbanded in The Wolverine, so unless they explain every single X-Mens return in that film it's a similar situation. Regardless I don't see it as a big of a problem since these films do jump so far from X3. And DOFP will probably do a time jump as well.
Its not a similar situation because Nightcrawler was never a part of the X-Men unlike Rogue, Storm, Colossus, Iceman, Shadowcat and Wolverine.
Maybe if this is X3, then we can just assume that after X2, he went on to become one of the X-Men. But since he wasn't present in X3, it would be odd to see him with the X-Men right away or if DOFP is going to be reunion/reformation of the X-Men and he's there as one of the former X-Men.