Do you think a player's statistics matter in how much he gets paid? If I'm a player in Henrique's situation, I want to be in the lineup unless there's a performance reason not to have me in there. There is not.
Of course the Ducks don't want him to get hurt. But only because they want a better asset for him. As a player, that's not an acceptable reason to me. I wouldn't be surprised if the PA made some not so subtle comments to the NHL after the Gavrikov debacle that players sitting before they've been traded is not ok.
If I'm the Ducks, I want to make my organization a place where players want to play. If that reputation is helped by not sitting players before they're traded, that's worthwhile. Mostly I'm against sitting players without good reason. If Henrique is fine with it, then so be it.