Li Shenron
Legend
SRD said:Withdraw
Withdrawing from melee combat is a full-round action. When you withdraw, you can move up to double your speed. The square you start out in is not considered threatened by any opponent you can see, and therefore visible enemies do not get attacks of opportunity against you when you move from that square. (Invisible enemies still get attacks of opportunity against you, and you can’t withdraw from combat if you’re blinded.) You can’t take a 5-foot step during the same round in which you withdraw.
If, during the process of withdrawing, you move out of a threatened square (other than the one you started in), enemies get attacks of opportunity as normal.
You may not withdraw using a form of movement for which you don’t have a listed speed.
Note that despite the name of this action, you don’t actually have to leave combat entirely.
Restricted Withdraw: If you are limited to taking only a standard action each round you can withdraw as a standard action. In this case, you may move up to your speed (rather than up to double your speed).
1) Is the highlighted part above enough to say you can't Withdraw from prone without standing up?
2) Why the hell did they change Withdraw to a specific full-round action? Nowadays you can't use it together with Total Defense, which was quite a very realistic way to really "withdraw" (in 3.0 you could either take 2 moves or take a move with +4AC, and in both cases the first square was not considered threatened).