youre right he wasnt out for the whole season. but if you recall the 11/12 season was extremely sparse as far as snow fall goes therefore making the time to film urban spots minimal. where as at resorts they can make snow allowing for filming to happen any day of the season. if you look at the urban shots in "keep looking" a lot of the people had shots on a lot of the same features. meaning when it snowed the few times everyone went and got their shots. one would wager that during these times steve was hurt and 4bi9 didnt want to put a lot of park riding in their movie.
or the alternatives: steve just didnt care, its a conspiracy to keep black steve down, hes filming for a 3 year solo project.