I experienced a bug last night that a few guildies have had aswell. I died outside the keep and ressed at the forward camp inside the keep, ran up the keep steps and into one of the towers as I made my way round I just died on the spot . I had taken no damage and it was giving me the option to ress with my own soulshard. I tried to use the soulshard and it didn't work and then I tried to ress at the wayshrine (all of which suggests a PvE death) and this would not work.
In the end I had to relog and I when I spawned I was back in the spot where I died in the keep tower.