Nice article Mark !
I'm not sure how significant it is, but the Yosemite site has now listed the pass as 'Closed' on their 'Current conditions' page for the first time this winter. Yosemite has previously listed it as 'Call' [before travelling] while it has been listed as 'Closed' by Caltrans. In other words, it is the first time the official site has used that word, CLOSED .
Could that be it ? Maybe, maybe not, watch this space !