First flex the small and medium branches to determine if they are still flexible, and have not become brittle and dried out. Using your finger nail or a sharp knife, scrape off a small piece of bark in several locations of the tree to see if the cambium layer is still green in color. If both are OK your tree could leave out next spring. If the tree's branches are dried brittle, and you can not locate any green cambium then it certainly does not look good for the tree. In any case there is no hurry to remove the tree. Wait until spring for any possible growth to determine what course of action you wish to take.