He's really not, though...I mean, he COULD be, because we're both just speculating on what actually happened. But you guys don't seem to get the difference between what I'm talking about versus something like that drifting video.
In the latter example, you're talking about lower speeds, and the back end is already purposefully broken loose, with the front wheels steering. The car's overall inertia is pointed towards the inside of the turn, and the front wheels MUST maintain traction so that the obvious counter-steering can direct it back the other way. 'Competition' drifting like that is an automotive ballet; what leads to accidents like Walker's is more of an automotive blitzkrieg.
The Porsche was already travelling at a very high rate of speed...realize that if the car impacted a pole at 100mph, it was going a decent bit faster than that before it started spinning. It's bleeding off speed during the spin as the tires skid; it's not doing it very efficiently, though- the concrete might as well be ice. That's the picture to have in your head...it's not a slow power-over, it's a violently fast spin. The back end of the car is whisked out from under it under traction, but it's quickly lost...not just at the back end of the car, but also at the front as it is jerked in the other direction. Such a condition during a high-speed turn WOULD throw it towards the outside.
An at least semi-skilled driver would not be on the throttle during the turn...their mistake would likely come while accelerating out of the exit. The driver's brain said 'it's go time' without realizing that that car can probably easily snap the back end out from under itself in third or fourth gear. On a straight. It's very much like the analogy I made to a rocket on the back of a car...it's nigh-impossible to direct that massive thrust straight ahead, which causes the back end to pass the front end and the whole shebang to spin like a marching baton.