Glad you managed to save it, Peter. I would be inclined to agree with others, slow down (before if possible) and coast across.
As you know, down here we can have the same sort of thing, mossy roads, wet, damp corners with leaves, etc. etc. In winter, especially, I am very cautious of shaded corners and patches of road. The winter sun around here hardly gets time to dry up some sections of road. In winter I try and get out later on the roads to give them a chance to dry. Also look out for green tint on the side of the road, usually an indicator of moss.