I've been getting what I think is the same issue, I make some progress north and then get teleported back somewhere I just was to the south with no ability to move or look around and I have to Alt-F4 out. When I relog I'm put where I teleported back to. It seemed to happen fairly regularly every 10-15 mins or so, I did end up further north than I started but I kept getting put back, it happened 3 times and now I've stopped playing as it's probably just going to keep happening. I didn't start at the coast though, I just picked up where I left off earlier in the day in Zelenogorsk (it was fine then). I was on one of the GB/UK servers, I can't find a way to check which one exactly.
One thing that might be of interest/use is that I still had the items that I picked up in the town before I got teleported back. Basically I went to a town, looted it, ran to the north of the town, got teleported back south of the town and still had my loot from the town.