Joe. I too am very puzzled by what is happening with my station. The data seems back to normal again at the time of posting, except that my station isn't on your map.
You may recall from one of my emails that this problem has only materialised since I upgraded from VWS 13 to 14 at the beginning of August, which I had to do because 13 didn't support my new station a WMR-200.
What is more confusing is that none of the other websites I feed with data are affected, IE Wunderground, Weather Exchange,or CWOP.
You mention making a change to Windows host file, that sounds painful.
What exactly is involved?
Alan.