Yea it is a problem, the only way I can think of would be a magnet, but I don't have any clue if that would even be possible. The debris would probably go right through the magnet. The magnet would probably mess with their instruments and other satellites too, so I guess the plan for now is to just wait and hope they fall back to earth to burn up in the atmosphere.
Even the space station needs thruster to control and maintain it's orbit.
http://www.nasa.gov/mission_pages/station/research/experiments/274.html
On a side note, I don't know if this is true, (I would imagine it is) but I heard some satellites are equipped with thrusters for dodging and avoiding debris. Pretty interesting stuff, I've always been a big SCI-FI fan and reading up on this stuff kinda fuels that lol
Anyway I think this post has turned into a private conversation so this will be my last post.