I've planted shrubs very very late in the fall and they've always been fine. One year I had the holes dug but it snowed very heavily, and then the plants came. I thought I'd have to try to overwinter them indoors, but a week later enough of the snow melted and the ground was still soft so I planted them. They did very well too and came up in spring without any issues. I'd say they'll be fine, but let us know come spring how they make out.
