She evidently has some hold on him. Not only are they giving up their Royal duties, they plan to spend at least, if not more, than equal time living in Canada. Some have suggested that she did not feel particularly welcome in the Royal household nor was she comfortable with the rules and restrictions that went along with being a Royal. Piers Morgan wrote a scathing article about their decision and how they went about announcing it. Not much of a fan of his but he did have some good points.
Last summer at Wimbledon she was turned away from the Royal box because she was wearing jeans. I think in this day and age that's a bit much but tradition is tradition to some and her staff should have told her it was a no no. At the same event a fan was going to take a picture of her and her security service shooed him away. Not sure if it was the security that decided that or her but the magnanimous thing to do would have been to welcome a true fan, not a professional paparazzi, to take the photo and move on. At times she could be her own worst press agent.
It will be interesting to see if they are allowed to keep their titles if they are going to shift to low gear in performing Royal duties. Can Harry's even be taken away? He is in the direct line of succession, albeit a ways down the line, so I would think his title would be mostly secure?
What's the point of an open door policy if inside the open door sits a closed mind?