Just to confirm on the current ridge trail conditions –
The first singletrack section had indeed suffered before christmas, and had been repaired with stone filled wire gabions and additional stone surfacing.
Further erosion and land slippage occurred after the snow/thaw the other week, but as of saturday this had been repaired too, and the whole trail was clear/rideable.
Personally the 1st section seems vulnerable to serious erosion, being bench cut into such a steep hillside. Whilst the recent weather has been pretty bad, I'd say it's been fairly typical winter conditions for Haldon. Time will tell how this section holds up in the long run.
The other sections of the new ridge trail seem to be bedding in nicely now.