Firing is a state in which a character will not be able move or be moved except to fire a missile wepaon or spell
Firing is typically accomplishing by using the firekey which will; temporarily place the character in fire mode as long as the key is held.
To toggle the braced status: Use the fire command.
This, along with braced are the most common states for new players to accidentally get confused into thinking they are stuck. It can easily be switched by using the fire command again to toggle it off.