I can't even think of a reason you'd need to do that. Let alone how you would even start coding something like that. Sorry but I don't think I'll be much help here, good luck though!
If you use Yanfly's plugin, battle start with the command of battle ready activated. And i love this think. BUT if the command battle is activated, the Character is selectet. And when you are performing an action, the character do a step forward AND if he's wounded, the sprite is not shown on their knees, but standing, as if it is in force.
SO... in a scripted battle that the enemy deal a big damage and the character talk, when the turn go to the player, become SELECTED and it remain in a standing position.
If the system press ESC, the character will not be selected and will remain on his knees.
This is the problem xD WTF!
P.S. In Yanfly Battle Core that thing is here:
Battle Windows
There’s various options to adjust the window settings found in the battle system to make navigating the battle system more intuitive. Such options include starting the turns with the Actor Command Window instead of the Party Command Window (the Fight/Escape Window). The Party Command Window is still accessible but only by pressing cancel on the first actor’s window.