That’s pretty normal for pine seedlings around here. They tend to dry out in the winter, but they usually bounce back once things warm up. Don’t try to compensate with extra water, since you’ll drown the roots.
Virginia pine is a colonizer species that thrives in disturbed areas. As such, I’ve found them to be fairly forgiving of neglect. That said, I have also yet to refine any into “finished” trees. I only just started working with them recently, so mine are still in development.
Loblolly pines are also vigorous growers in this area, and they respond well to root work. Unlike most pines, they can handle fairly harsh root pruning and also wet soil. That’s not a recommendation. Just that if you mess up, the tree should bounce back if you let it grow unrestrained for a while. The drawback of loblolly pine is that like other southern yellow pine species, the needles are long and the growth can be coarse. I can’t comment on how well the needles reduce because again, I’m still developing my loblolly pines.