I know if you advance past a base and then need to return to the previous base as on a caught fly ball that you must re-touch the base that you passed. This happened the other day, runner on 2nd and the batter hits a line drive up the middle that almost took the runners head off, the runner jumped back off the bag and stumbled backward toward 1st base, when he regained his balance he ran just in front of 2nd base to 3rd and didn't re-touch 2nd, should he have had to re-touch 2nd befoe going to 3rd? and if so it would be an appeal play correct?