As u must know he hurt his foot when he was preforming in new york and fell of the stage.and i think he had the boot on so he could still at least dance and sing on stage at the NEW YEARS PARTY. because wat would it be if u u could dance to ur fav song.. one time
actually it was NY and he didnt fall off stage he tripped when he came danceing out and he still preformed and danced for the rest of the song. he fractured his foot. and he still had his cast boot cause it just happened in november so it is still healin.