Interestingly, so far I haven't gotten disorientation in actuals... yet.
Luke: I won't fail you. I'm not afraid.
Yoda: You will be.
You will be.
It's actually very good to have the experience of being disoriented. It's a test of self discipline to trust the gauges while commanding your hands to do what it takes to keep the airplane flying upright, even though you know you are turning/climbing/whatever.
I've experienced real, holy-cow-this-ain't-right disorientation a couple of times so far -- both were in actual, once with my CFII aboard during training, another time IMC solo.
About 10 hours into IFR training we were flying to a nearby airport in IMC to do some ILS approaches. I rolled out to the outbound heading on the VOR radial and heard him say, "Why are you turning?"
Hunh?
"
Why are you turning?"
"Ummm..."
"
WHY are you
TURNING?"
Gene Hudson talks about "The Hand of God" as a factor in some accidents.
I found out exactly what that was -- my mind
heard the words, my eyes
observed the indications, and yet my hands
would not do what they needed to do to fix the 5 degree bank.
It was a very good lesson, and I was able to test that lesson's effectiveness a few months later.
I was newly minted IFR pilot and decided to do a XC to log some time towards the Comm. I filed, even though it was basically a VFR day.
It quickly turned into a hazy, foggy, just-above-legal VFR day.
I was climbing out from PKB and suddenly I realized I was turning. I was above some ground fog, in some very heavy haze, and had no outside references visible in the climb.
I heard the question -- "Why are you turning?" in my head, verified that I was, indeed, turning, and then shifted position in my seat to make sure I was awake and paying attention and forced my hands to fix the problem.
I haven't had that problem since, but I think it's because I encountered it and had to face it down.
I'm sure some pilots never, ever have this problem.
I won't pretend I'm one of those.