let him be.....my dad told me hes seen a bunch of deer with blown off legs make it.....if he makes it a few more weeks he should be fine.....a few days of warmness will probally give him a nice kick start.....but that looks doubtfull.....this week looks really cold......if hes down to skin and bone id drop him and be done with it......no reason for him to suffer and starve.....once he gets so starved he wont even move to go look for food.....he will lay there and die.....and that will probally take a while or he will freeze...but it wont be a quick death.....id have to see the deer to make the call on what id do......but if he seems like hes doing ok id leave him be........i felt bad for a deer i seen one day im ML season.....it had a leg that someone hit low and blew it off...it was dragging behind the deer.....i had a shot at it twice i could dropped it...but my friend was meat hunting with a slug gun(legal here) and i figured hed put it down since i had 2 does in the freezer and was waiting for horns....he shot at it twice.....it was raining and there was no sign of a hit......we kept driving all through the area trying to get it or other deer out.....he never came out....we found him a week later....gutshot from my friend and with the blown off leg....turned out to be a shed antler buck....i feel bad because i know i could had a good shot on it.....twice.....and i didnt do it....yotes got it and took care of it before we found it.....we drove it out so it was trying to run so i cant say if he would lived....looked like he was ahving a rough time...but if you ahd guys behind you screaming and yelling youd run hard too......i dont know what id do.....probally let it go in fear of getting caught.....but if i knew he was dying and could get away with it id drop him.......