There are more details on the link above. The boat was apparently new. ( Now its 'like new' ) You can still see the winch strap/hook latched onto the bow eye.
NO TRANSOM TIE DOWNS.
Details are sketchy from the other post. The rumor is that the boat rolled. If it did slide, I think you would see a trench under the boat from where the bow dug out the sand on the way in. If it rolled, you would think the windshield would be mangled along with the rails and such. Actually, from those pics, the boat looks remarkably good for what it went through, sliding or rolling. Almost like someone 'placed' it there.