I am 99% sure he is the only one to do it in the Superbowl era .. Could be wrong though. I am now trying to search the pre-Superbowl era.
Edit: William Floyd of FSU came REALLY close to being another. FSU in '93 at Miami's Orange Bowl (demolished a few years ago), and 49ers Superbowl XXIX in '94 at Miami's Sun Life Stadium/Joe Robbie Stadium/the site of the current Orange Bowl.