Some years ago I was doing a bunch of quick turns in a foreign aircraft, which utilizes a control lock just after landing; big control surfaces are subject to damage in gusting conditions; the control lock stays engaged while hot loading the airplane, then is disengaged on the runway or just before. On the 9th or so load of the day, I pushed the power up with the control lock engaged. Someone was killed in the same type aircraft shortly before that, doing the same thing. A day later, I watched a pilot reject his takeoff, and though he didn't admit it, I knew exactly what happened. Same thing.
Incapacitation? Maybe. I doubt it.
I make a habit of stirring the stick several times before every takeoff, and never the less, managed to taxi onto a runway with the controls locked. I had years of experience in type. It happens.