A lesson to be learned over and over again.... Tackle with your arms not your shoulders. Not only was that a dangerous play (safety wise) you have nothing to gain to lead with your head/shoulders and go in into a tackle with little visibility.
Also, why were there no safeties waiting in the end zone? I would have rushed 3, with 8 DB/safeties on the field. Just epic fail by the Saints there. Feel really bad for all the New Orlean Buckeyes...