It floats and they use anchors to hold it in place. Some of the anchors just got dislodged in the storm. No biggie. They pick 'em back up and re-tension the anchor lines. I have been on rigs when that has happened. A little freaky but not a disiaster.
The rig could be in dry dock for a while. This rig is dynamically positioned with GPS, no anchors. This was a non-producing drilling rig, not a production platform.