I went back to check the cache today, and it was still there. I did notice though that the GPS location was somewhat different from when I originally measured it.
The new (and hopefully correct) GPS location of the prize is N42*33.547, W83*12.596
Also, more hints about where it is:
Follow the right side of the field, to where you can see the power transformer.
Follow the path until it comes to a "T".
The prize is hidden behind a large fallen log about 20" off of the trail from the "T".