Another claim to his short-lived NFL fame is that he is the last player to rush for a one-point conversion, running in a muffed PAT attempt at Cincinnati.
He must have done this before 1994(?), which is when the NFL adopted the two-point conversion. That is why they say he is the last
player to rush for a one-point conversion.
Because the NFL did not wish to allow the defending team to score two points on a failed-conversion return, they blow the play dead as soon as the defending team gets possession.
However, the obscure "one-point safety" (Google: "one point safety" NFL) is in the NFL rulebook, apparently. In the NFL, it can only occur if the defending team knocks the ball into their own end-zone during an extra-point attempt. (If the ball was already in the end-zone, it wouldn't be a safety obviously.) It is a bit more plausable in college, where the attempt doesn't end on change of possession, and one seems to have occured in the Texas vs. Texas A&M game of 2004.
It might also be a one-point safety, but for the defence, if the attempting team runs backwards the 98 yards to their own end-zone, then gets tackled. (Since the clock doesn't run on extra point attempts, there is no good reason why this should ever happen.) I do not believe that this counts as a safety, but I can't find a good copy of the rules to check.
"The successful conversion counts one point by kick; two points for a successful conversion by touchdown; or one point for a safety. "