Are you kidding? That Kaepernick play was one of the most exciting and memorable plays of the season, at least from a betting perspective. I've already heard plenty of stories from friends who were in various sportsbooks. They said the roof blew off. The one play changed not only the spread but the total. It went from Dolphins and under to 49ers and over. Total was 39.
It was the last thing the sportsbooks wanted because the other two late games (Seattle/Arizona and Giants/Saints) had the identical result -- favorite and over. Recreational bettors love favorite and over. When they are buried in the early games they'll make last minute parlays on the late games. Tons of guys hit a 6 team parlay because of that Kaepernick play.