First Edit: Drift

[Todd]

Richard,

This took an interesting turn. Some comments on the revision below.

Drift

Last week's snow is frozen,--considering your themes and the narrative you hook them too, I wonder if you want last week's as opposed to last night's to tie it closer to the argument. Obviously you could be saying something by using weeks it just depends how much you want to focus the lens.
hard as morning after apologies--I like the line break on frozen and the starting of this line with hard. I also like the simile.
given to a back, sore--I do not like given to a back it feels clunky phrasing. I like the idea you're going for Maybe try for a parallel structure "hard as a morning/stiff (maybe tied to the halting back up sort of I will not reconcile and the back sore and stiff on the couch). I won't try to show the phrasing I'm mostly just trying to suggest a possible path nothing more. 
from sleeping on the couch again.

I use your gardening spade,
still dirty with spring soil;
your annuals long dead.--Nice subtle comparison to the relationship. All of this. 

Inside, our son plays
with his imaginary friend
(we can't agree
on how much to humour him).
You protect yourself
beneath a quilt
with a thread count you insisted on.

Our silence repeats in my head,
until winter wind starts an argument
with my labored breaths-
then the shovel breaks.--This is a nice sequence that ends in futility. I like it. My issues are mostly with the opening.

Best,

Todd