I recently completed a 24 hour race and about 5 hours in I hit a rock and took a tumble. After that my XT STI/pod shifter lever becmae sticky. When I pushed "down" to shift the lever would remain down (the bike would shift fine) and it would return to it's normal position until I pushed it back up. At which point it would snap back into place...it just required a little nudge.

Has anyone experienced something like this before? Suggestions?