No doubt, he knew the cameras were on. I'm surprised from that spot he didn't say something like "If Phil can do it......"
Either way it was pretty cool.
On the one hand it seems it could be a bit less genuine if he knew the cameras were on him. However, the cameras are probably on him quite a bit. Does that mean his conversation with his caddie and the rules official when he thought the ball moved was less genuine as well? I guess he could have normal conversations and also throw in a nugget meant for TV, I don't know. But that shot was bangin.