I was referring to the plants on top of this picture - they seem ok, at least from what I can see.
A week in a sub-zero - still pretty amazing anything lived.
I did give them an edge. Here is a little 'trick' that might be useful to others in the future: I layer a larger biomass around the more 'important' plants, sort of like a sandwich, with the biomass closest to the outside of the box. (all plants in separate sealed bags). If the outside plants begin to rot in transit, they produce a tiny bit of heat that just might shield the plants that are closer to the middle of the box. If you have ever seen a bale of hay in the winter you should have seen the heat raising up as vapor. At least, that's the idea.