This was recorded when I first acquired the Dead Ringer, less than a week after the Sniper/Spy Update.
Valve has changed the Dead Ringer so that it drains half of your charge after decloaking so the actions in this video are no longer possible.
Love this weapon. If you are seen by the enemy, simply trick them into thinking that you are dead, and watch them go on their merry way. And then stab them in the back. :)
Allows you to take a lot less damage from weapons as well which is good for surviving most lethal attacks.