It's been answered by Glubags. Twice.
Im afraid it hasn't been answered. After trying it just now I can confirm that the demo's physics engine does not support T.T.O. In real life you can't correct from T.T.O. with just steering input. Throttle must be applied to correct the oversteer. For this is not true in the game. In the interest of full disclosure I have only played the demo with a controller (my DFP is broken, and the G27 is in the mail), so MAYBE I am able to correct from T.T.O. without throttle input b/c I am able to move the steering from lock to lock so quickly (using the stick). If others are definitively experiencing this, then my guess is that they are using a wheel, and going from lock to lock in fractions of a second is not physically possible like it is when using a controller. So can others confirm this that they use a wheel? Again an easy way to experience T.T.O. is to imagine you’re on a slalom cone course on one of the straights. Weave thru the course at a high enough speed as to be on the edge of tire grip with a constant throttle. Then to induce T.T.O., lift off the throttle while continuing to weave thru your imaginary slalom course. With the controller you are able to correct with just steering input.