The next fridge! Perfect for goal line and short yardages up the gut.
DT is the better overall paycheck (last longer on average too). Besides, NFL defenses would light him up in the backfield.
His ceiling the the NFL would be "Blount" level at best. Not bad for a guy his size, no doubt impressive as well, but the guy isn't going to be any kind of "elite" (unless he makes a switch to defense). And still, there is more to being a DT than just gaining the first step, so that would also be questionable to some extent. He's also not going to be pushing/running over other guys the same size/weight like he does in the vid. Those kids are half the size of NFL players.
Regardless, he will have some use in the NFL somewhere. "Odd" talents such as his, seem to always find a place.