I was walking through a town (unsure of name) and I came across a small pond which had a pile of grey, silvery blueish trash pile in it. I happened to walk over the trash pile and began sinking into the pile. I was unable to move out of it, stepping over didn't work and I was unable to move my camera around. Disconnecting and server hopping didn't work to free me, my character just ended up deleted. I hope someone can replicate this so it isn't just a one off.