It was not a very good day for the Tennessee Titans. Not only did they get blown out, 41-7 by the Houston Texans in a crucial division game, but they suffered a unique level of embarrassment on a kick return in the fourth quarter. Yes, that was Texans kicker Neil Rackers,the plucky 12-year veteran, with the Hit of Doom on second-year Titan Marc Mariani. As you may know, Mariani isn’t just any shru…