Weaknesses found across the range from the Feb 8-10th period of high pressure, high RHs, and little wind. The late Wed/early Thurs light snowfall well preserved both surface hoar and surface facets. This has been the culprit in the bazillions of human triggered slides since the 11th or so.
It is debatable whether the number of slides triggered have been related to surface hoar. Many are confirmed, many are not - and failed at the diurnal or radiation recrystallized snow. Many have been triggered remotely. Regardless, the weaknesses formed at the same time period and will be somewhat slow to stabilize.

Here's another shot looking across the bed surface to see weaknesses above the newer crust and then of course the older one.
Route continued into Cardiff with no cracking or collapsing.