I stated in another post that Star Wars has a huge following of very dedicated fans. The fact there is more than one change to this classic movie is very shocking. It makes me think the effects might be a bit more uncontrollable then we think, or its a ripple from a butterfly type effect in the matrix.
The famous line has always been Luke, I am your father and thousands of people have that very same memory. The new No, I am your father is not from my reality.