Don’t get me wrong here. Recommissioning this ship would be a logical response to the Ukrainian Neptune and Harpoon missiles. At least this ship could take a beating and make it back to port.
If the big guns are employed then it might be useful for supporting shore actions. The Russians could put some mobile missile systems on her for defense. It would give them a skosh more capability than they’re going to get in theatre given that the Bosporus is now closed to the Russian navy.
Still, it reeks of desperation to call an old ship like that back to service without a massive refit.