You can write a way to justify any plot development.
It doesn't change the fact that doing so after two movies that shamelessly ripped off varying aspects of the OT, while giving absolutely no foreshadowing to it, is so fucking retarded my brain is melting from second hand stupidity. This isn't even going in to how it puts a bullet in the already fractured accomplishments of Luke and Anakin, and gives yet another jewel for Rey's Sue crown.
At least if the frantic reshoots are any indication, at least one test audience member pointed out how idiotic the>how are you still alive?>dunno lol
line is, and they changed it.