Well, as far as I know, interim orders are present in at least ten other pieces of legislation. The one I'm most familiar with is the Aeronautics Act, because that's the one we have in Transport Canada. The minister, under the Aeronautics Act, has the authority to do interim orders, and he has used that authority a few times already since it was brought into the legislation back in May 2004.
Generally speaking, when he's going to do that, it's because he has the authority. He can only do that if he has the authority to regulate and if the intention is to regulate.