Well the nearest Subaru dealer around here isnt open on Sundays so it looks like Ill be waiting till tomorrow.

To answer your questions. Yes it was on sand/dirt. Pretty much the same surface Ive seen in the rally meet vids. It was a bit wet out, though. The surface is pretty much flat too.

I cleaned the wheels pretty thoroughly, but theres a chance that some dirt could still be hiding in there. Im also gonna check to see that one of my wheel weights didnt get knocked off.

Is there any way this could be an alignment problem? Or maybe a wheel bearing?