Not a pilot, but a former reliability guy for the major microprocessor manufacturer, and well aware that routine checks can get skipped by human beings who don't think they'll ever catch anything. But I'm genuinely puzzled by this:
About 26 seconds into the takeoff roll, when the airplane had reached a speed of 148 mph (129 kts), the pilot in command indicated that the flight controls were locked, but the crew did not begin to apply the brakes for another 10 seconds and did not reduce engine power until four more seconds had passed.
My guess it that despite the recorded comment, somehow internally there was some combination of disbelief and of "success orientation", but that is a pretty wild guess.