You mean J2? Throw out all the scores s/he gave, each and every mark including the 10's still counted as given by some other judge. In the case of SS, J1's mark would be the one thrown out as the highest.
No single judge can pull a skater/team ahead as the highest and lowest scores are thrown out.
Yeah I'm just saying if his/her score was lower than the second highest, S/H would have probably been second.