The biggest danger will be if there's no season this year -- you'll get stuck with the salary, and will reap none of the benefits.
Still, I just don't think you're giving up that much. Crawford hasn't exactly dominated, and MacDonald is pretty replaceable methinks. Losing Brodeur won't be too bad, and Thornton and Kulikov should still command something down the line.
I'd take it.
Points-only, Full Keeper Dynasty League
Active roster (no starts, just total points): 12 FW, 6 D, 1 Goalie
Forwards: Ovechkin, D. Sedin, Stastny, Nash, Kesler, Ribeiro, B. Richards, Selanne, Hossa, Fleischmann, Whitney, Lecavalier, Alfredsson, Okposo, Plekanec, Doan, S. Kostitsyn
Defense: Goligoski, Campbell, Gonchar, Bergeron, Liles, McBain, Vatanen, Timonen, Visnovsky, Giordano, Wideman
Goal: Luongo, Holtby