Hi 5thGen,
Sorry, you have been forced to deal with this problem on other terms than your own.
The great thing about having the truth on your side is that the burden of proof very quickly shifts to the those who would defend lies. Stand tall and be proud of what you think about the BORG. You don't have to hide and defend and excuse and twist anything to make your point but they do. The TRUTH about the the Dub version of the "truth" is all you need to make your arguments to your Dad.
In any event, any way you slice this it is going to be rough on you and your family.
Hang in there Brother (and I mean that in the most worldly, loving sense of the word).
Cheers,
Alex