not sure if this might help, but I was driving in a truck yesterday when I got that memory crash issue going on, I did not close the box that popped up showing the error and I just restarted dayz and my guy was still alive but was placed about 20 to 30 feet in front of the truck and a little to the left. I know if you close the error box and restart the game it does not show your character at the main menu screen.