I'm also amused that, while the article opens with a photo from "The Family of Blood," the author leaves this out, which is odd considering it's a situation that I do agree that The Doctor acts like a complete bastard and is called out on it by Joan.
I don't think he did. You can't blame the Doctor for what happened to the town/city. He knew that the Family would not find him if everything was done right. If Tim didn't steal the watch and open it, the Family would not have found what they were looking for and moved on.
His punishment of the Family was poetic justice.