The only problem is that now I have to make sure to be very still so that I don't shake the camera when I hit the shutter button. I'm doing a 0.5 second exposure so that can have a lot of impact.
So I thought to myself, 'I wonder if I can get a remote to trigger the shutter so I don't have to touch the camera?'
The short answer is no.

The long answer is, if I put some open-source, aftermarket firmware on my camera, it can support a remote shutter release, but I have to make the remote myself.
Needless to say, I'll be installing the firmware this week and making a trip to RadioShack on Friday.
I get to play with my soldering iron!
Couldn't you get a tripod to stabilize the camera, and reduce wiggle? Or do you need to be able to have your camera moving along rather soon after the shot, rendering my suggestion useless.