Answer: I'd allow them to grow on their own schedule. If the winter weather has been (and remains) warm, you'll get a jump-start on spring and will be able to enjoy blooms early in the season. If there's a cold snap though, the new sprouts may be damaged and will have to be pruned off. A second pruning, if necessary, shouldn't hurt the plant.
So, cross your fingers, hope the weather remains warm, and enjoy those pretty roses!
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