I think he's had a little bit of practice. Theoretically most of those moves can be done in a real helicopter. The only thing is it couldn't handle the stress. I'd hate to be the pilot in one of those.
There's a vid just like this one, except the guy has a gas powered model, so he goes longer. I love hearing it bog down when they really do some heavy pitch changes, let's you know just how much force it's really taking