He's got size and speed, two things that even by themselves can normally let one dominate the AHL.
And honestly if he could just improve his overall play just a bit, it wouldn't surprise me to see him back in the NHL. He was passable defencively, and good on the forecheck, but as we all know his line always struggled horiblely in the possession battle.
Right now they've got Hendricks, Pakarinen, Klinkhammer, Pitlicks, Khaira, and possibly also Kessy as guys I like as 4th liners. Big, fast, and willing to play physical, and not a defensive liability. (Though I avoid guys like Hamilton, Pinizzotto, and Gazdic as they just can't skate or control the puck well enough)
I'm not a fan of having guys like Lander, Letestu, and even Korpikoski on the 4th, as I feel that robs you of what the line should be doing. None of them are elite defencive specialists, and they bring little else to the lineup.