Thats really odd. Was the offside rule interpreted differently back then? He seems to have given offside because a player was offside one touch before the cross. I say seem to because I'm not even sure what he gave it for.
That is what he gave it for, and the rule was inerpreted somewhat differently but even for the time that was a shocker.
It used to be much more of a case that if you're in an offside position then you're offside. There was less consideration given to active/inactive, or if a pass was going towards the player who was in an offside position.
Thing is, that wasn't even a pass. The touch was always intended to knock it past the defender to beat his man and was part of a run/dribble. It was a heavier touch to knock it past him than most dribbles but that's still what it was.
If they were going to give it for that then they would have to give it for anyone being in an offside poition when a teammate was running forward with the ball. They didn't do that at the time because that would be silly.