They don''t have to wait for it to be retconed.
Not that anyone needs an in-story justification to rationalize it, yet pretty much the moment they introduced time-travel, and this happened, when he pulls her out of the time-stream, the time line was officially split....
They created two time-lines. Everything following and built off ^this event, going forward is canonically a completley separate timeline/universe.
So the lame deadbeat Han Solo who abandons Leai, and who's pathetic death is suicide by brat .
The Leia who is the worst, least inspiring leader in the universe,
And the failed hopeless Luke, who is an abject coward, slave to Jedi dogma, hiding from his friends, and consumed and slave to fear, all complete betrayals of who the characters are.
Can (if you want) already be explained by canon, as being from a completely separate wibbly-wobbly timeline/universe.