If you are in a guild, you can teleport to the wayshrine closest to anyone in the roster (and on-line) -- right click on a roster entry. Best thing is it is free.
I crashed while doing one of the public dungeons. When I logged in I was falling, and then fell into a deep hole. I died, but when I released I crashed again and it put me right back where i was, but now alive.
No enemy can get to where I am, short of getting stuck themselves.