My kid's HC doesn't come to practices anymore. When at games HC just works the door. It's rather odd. This isnt what we signed up for and my kid has been asking me what is going... Its not even remotely close to what my kid experienced the first year with the team. It's almost as if the HC is slowly, working himself out.
Find a new team. Finding a good coach is key and often a rare find.
Maybe the guy is having family issues, health issues, marriage issues...until you know I'd say like we say in Quebec - 'Firme La Bouche'
Maybe your little bender who doesn't listen has worn the coach out?