I wouldn't go so far to call him a burden. I still like his game, even tho he's not scoring at the moment, he has been getting chances and creating chances.
If there's any finger pointing it should be directed at guys like Reinhart, Ennis and Girgensons, who all look to have regressed from last season.
That said, I like the way Risto's defensive game has come along... he only has 1 point over the past 6 games, but is a +2 over that stretch and has a +/- of 0 for the season.