1. You're obviously not a Christian. Extremism does not define the movement.
2. The "he'd totally be OK with using the power and tax money of the government to snuff out anything it feels is un-religious" claim is an old canard. The religion of Socialism is every bit as dangerous, in fact more so, as it is not assumed to be unconstitutional.
3. But back to the beginning.
"The Republican Party leadership is Republican all the way through."
Oh my. The current Republican Party leadership acts indistiguishiably from the Democratic Party leadership. I cannot think of an example to the contrary. Offer one, please. Oh, wait, they tried to fight the debt ceiling increase, if that counts as a fight. So forgive me, in that instance they were inept.
"Your problem is that you have awoken to the realization that Republicans aren't truly Conservative"
Hmmm. I'm awakened to the reality that the Republican leadership isn't truly Conservative. The membership I'm not so sure of, but the Party is indeed a big tent.
"and that it's impossible to be both an authoritarian theocrat social "conservative" and Conservative at the same time."
Which is why I am only one - as many, no most Republicans are. You both overestimate the theocratic minority, and focus on them as if they are actually in power. From here, it seems you have quite a fear of them. You'll get over that, I fear.
Point #3 stands out. The complaints of much of the rank-and-file Republicans I have a chance to talk with focuses on the apparent cooperation the Republican leadership seems bent on achieving with the Democratic leadership in policies that would focus Conservatives in opposition to the current republican leadership.
You are, sadly, deluded. Go back to MSNBC and keep studying. It works to my benefit.