There's nothing you can do about it without risking being seriously injured.
You have no idea how much self control the Rottweiler has, in this situation, to refrain from biting his owner.
Rottweiler owners, please be very careful. These are very loving pets beautiful to own but things can go seriously wrong, because of how powerful they are. More important than training, the rottweiler needs to know his place... In this video the rott thinks he is the boss, the baby is his, not anybody else's and it can lead to serious injuries to the owner, the dog and most importantly the baby.
As a Rottweiler owner myself I would hate to see this bread banned in certain places just like what happened with pitbulls in certain cities, countries, Provinces and States...