this is so wrong.
Leia says she remembers only bits and pieces of her mother and that she was sad in her memories. You CAN have memories from that long ago, FYI.
Han and Chewie travelled across the galaxy and never came across anything that made them believe some force was "in control of his destiny". HUGE DIFFERENCE from being in control of your destiny and the physical power of the force and the jedi.
BlazingShadow is right here. The whole Leia thing has been explained:
Although the Organas were not trying to hide the fact that Leia was adopted, they never informed the Princess of her true parentage, nor did they reveal the existence of her twin brother. However, during the short time between her birth and her mother's death, Leia gained a faint memory of her mother as a beautiful and kind, yet sad woman. ~ Wookieepedia
So partially through her own memory and through the Force, Leia retained an image of her mother which matches Padme's description (especially at the time) perfectly. You may say, but how is that possible? Even with the Force and at such a young age? But remember what Yoda says:
"Through the Force, things you will see. Other places. The future...the past...old friends long gone."
But anyway, I don't want to get too bogged down in that.
BlazingShadow is also right about Han and Chewbacca, they never said they hadn't met Jedi, Han just says he doesn't trust the Force. And even without the prequels this doesn't make sense. As Obi-Wan mentions lots of Jedi used to exist, so Han would have knew about them.
So as you can see, this sort of thing can and has been corrected very easily. It would be even more easy here. Plageuis has already been given mentions of Vitiate, as have other characters. And new EU following on from these events can easily be written. Just because no one mentions it 2,000 odd years later (why would they?) doesn't mean it can't work.