Well they are defensemen, they are supposed to be around the nets perimeter. Sometimes it can end up hurting since they screen their own goalie.
I think the biggest reason you guys are out shooting the Ducks is because when your offense is slacking you just try to put pucks on net and "try to make something happen", whether it be a lucky goal, catching a rebound, a redirect, etc. The Ducks can take shots at the net all day too, they just choose quality shots over quantity.
I just don't like Cheechoo. He can make goals like that every game and I will just hate him more. It's just one of those players that get on my nerves. Everyone has one...