1.)* = Unconscious/Death
2.) have partner kill you
3.) Don't click "Respawn" click "Exit"
4.) Go to server list and pick a new server (other than the one you were just in)
5.) When you spawn in to the new server you will be right where you left off in the previous server, no longer unconscious.
6.) Leave that server
7.) Now connect back to the server you and your friend were in.
8.) Profit from no longer being unconscious, dead, and still have all your gear.