I went down for a look this afternoon, sobering doesn't even begin to describe it.
It looks like at high tide it will have about four feet of water around it and it isn't a small yacht. It would take some serious gear to get it back in the water and the tides are only getting smaller.
Will post up some photos in the next few days, I am just waiting to hear back from the owners to see if they mind. Have also offered them the use of my yacht if they need a liveaboard for a ,month or two.