FYI - DWR just released a youtube. An odd release. Suspect it is dealing with speculation in other youtube media and/or discussions. Here is a picture of part of the video. The DWR youtube is titled "Non-Sink Hole May 20, 2017".
DWR May 20, 2017 Youtube:
https://www.youtube.com/watch?v=DIuNfw5Vxsk