As a former D man...this is excellent teaching of proper technique. Coach is 100% spot on. Make the wing go wide to the boards. Your partner should be covering the middle of the ice to cover a pass.
This dude probably could coach up top. But he is VERY detrimental in developing these kids game. I have a feeling that we'll be hearing his name in the thank you list of a few guys in the league some 5-10 years from now.