pro: old bark//con: long straight trunk, no movement, no lower branches ( but they can be grown if needed). Nebari is impossible to see so cant give comment on that. And as you say pics are really bad...
Knowing what i know now i wouldnt dig em up but when i just started i would probably have.
Perhaps a very small bonsai, that needs to regrow all branches?
But before digging it out. Make a beter picture, remove the snow, and remove some of the soil around the base(nabari) of the tree, and show it here again.
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