Neal, PNW = Pacific North West. And not sure where you read that the OP didn't have room for them or why that would be relevant to the question. The OP isn't home to receive the shipment and therefore also cannot unpack them and put them on ice.

There are too many variables to really accurately guess if the shipment will be OK or not. But you're in a lot better shape where you are than if you were in the south. Most likely, they will be OK. I've had frozen shipments arrive with the dry ice gone and the rodents mostly thawed out, but still very cold to the touch. They refroze just fine and all the snakes ate them without any issues.

If you're really worried, is there a friend you could call to go over and pick the box up and put them in their own freezer? Or (if they're squeamish about the contents) put the whole box into a cooler with a bunch of ice?