Heyo,
I got player-killed by Andol thingwall yesterday. Was delivering a little village loot, and suddenly I notice my horse rearing up and taking damage. Didn't see him when I looked at the map before confirming the teleport. Tried to talk to the guy, but no response. Having no weapons, there didn't seem a point to fighting, though this probably wasn't a highly levelled up attacker. After killing me, he walked the corpse to an owned plot on the west side of the lake and stayed there until I respawned and travelled back an hour later.
What I noticed was that the Thingwalls in the area were blocked by small personal claims, impeding boat traffic and in some cases trapping you with the thingwall on horse. Of course you can always teleport away, unless he's bopping between points and tags you.
So, take the warning if you are travelling on the Southwest continent and be careful around those thingwalls. Coordinates are around -64, 244.