This is now the second time that Mr. Scheer has interrupted. I would think that as the former Speaker of the House and the former Leader of the Opposition he would know the Standing Orders better than most of us.
I call on him to apologize. This interruption isn't good for the translation; it's clearly not good for the debate and it's a violation of the Standing Orders. If he doesn't like what's being said, he's had an opportunity to speak and will have another opportunity again.