I wouldn't be upset if we exposed DK and Vegas claimed him. Jesus.
The thing is, if you're going to trade him, you're going to have to retain. And who wants to retain at least $500k for the next...half decade is it? And even then, what do you get for a $4.5M defenseman with zero offensive acumen and a terrible advanced stats resume? A 2nd and a b prospect? Leaving him exposed shouldn't be out of the question.
Edit: Hell, leave him exposed, protect only XO and Green, and offer your protection spot for a 2nd round pick to a team that needs a D protected, like Nashville, Minny, or Anaheim.