Personally I would not dig around in the soil yet.
I have 'Calgary Stampede' and we are expecting a thaw over the next five days so I can go into the field and I will be able to see its behaviour (since most if not all the snow will have disappeared). I expect that it can act as a normal dormant some years in your location. It probably acts like a normal dormant every winter here. I can let you know in the next week what it did here.
