The park reopened to the public on December 18th and today, December 22nd, I was able to make my way down Crags Road from the MCSP parking lot to check things out.
There were hundreds of charred trees on the way to the MASH site, along with plenty of downed trees and rocks on the path. The hike is not for everyone, especially at this early stage. And there are few points where the path is not particularly clear - unless you already know the way there from prior visits.
But when I got there, to my pleasant surprise, pretty much all of the MASH set items that were previously there were still there, looking pretty much the same. The exception to that is that the iconic M*A*S*H signpost was a bit hard to read. The sign was still there though, apparently unharmed. It may be in need of some refurbishment, however.