Just a couple addendums...
I was literally an 1/8 to a 1/4 mile from my house. The tailgater showed up out of nowhere. Its not like I had been driving 10 below for 5 miles. I was slowing coming up on my drive.
That still does not absolve me of my indiscretions. I normally signal when coming upon my drive. However, its pretty common in the country for folks to not do that. We're not really in a hurry out here. I follow folks all the time that will indeed putt down the road for several miles to their home. I don't get bothered and no other local I know does either.
But thats beside the point.
As for pulling over and letting him around, yes there is room to pull over if you're willing to basically come to a stop but as I said I was coming up on my drive in a matter of seconds. Its not the same as being miles from home and running 10 under. And yes the roads are tight. Come harvest season theres nothing scarier than meeting a grain truck coming at you.
As for all the "OC saved the OP" God bless you. Having words with someone doesn't at all always escalate into more. Bad idea, yes. But its certainly possible for folks to have a verbal argument and that be that.
Also, as I mentioned in the OP, the guy was driving a jacked up truck. As close as he was riding my bumper I doubt he would've seen a signal if I had used it. Suppose I had used it in the same situation and things turned out the same, what would you say?
Like I said I don't feel any of what I'm saying absolves me of some fault. But there's certainly some fault on the tailgater.
I'm just glad it didn't escalate beyond what it did and I hope everyone reading is taking something away from some of these posts everyone's making.