Oh my gosh, the possibilities! Yes, a lower gear ratio, a lower or higher saddle. . . also, a saddle forward or back a bit, a different Q-factor, a saddle not quite straight.

I tend to spin more on the trail because I mentally relax more and don't go for speed. I have one leg that tends to be a bit tighter than the other. Early season, I'll point the nose of the saddle to the side just a bit until I'm back in shape.

Were you using the same pedals, cleats and shoes that you do on your road bike?