First, I will respectfully decline the chance to get into personal attacks. I still think you're one of the good ones.
Second, there are always shrill voices. If you wish to judge a group by its lowest common denominators, I can't stop you. I would ask you to look at what the party as a whole did. Mitt Romney and Paul Ryan (the very first candidates to run after the onset of your alleged mass delusion) strike you as deranged radicals? I thought (and think) that they were responsible, moderate voices who would have made excellent leaders. If that's your evidence of epidemic derangement, I am not impressed. Voters passed on them, and we moved on (that's possible, I hear).
It seems there is still a great deal of debate about the road to November, 2016. We're probably back to "I can't stop you" territory, and that may be our destination. My party failed to listen to the concerns of Middle America. So did yours. Trump solved the Rub-ish Cube and he beat my party over the head with it in the Spring and yours in the Fall. We can either deal with that, or chase Soviet ghosts in the shadows as a way to re-write history. I'm ready to talk about the former.