Just curious, who does the trail maintenance for the hiking trails? Last time I hiked camp creek it was getting difficult to follow in some areas.
The simple answer to your question is "no one". I believe that responsibility falls to the park staff, but the park is too understaffed and underfunded to have that high on their list of priorities. I usually stop to do basic stuff, moving deadfall of the trail, etc, but nothing more than that, and it's been quite a while since I was over there.
The more important question is who is going to finish the trail? The bulk of the work was done by AmeriCorps volunteers a couple years ago, with some design recommendations from Mike Hufhand, but since then AmeriCorps hasn't been back, and work on the south leg of the trail has completely stopped.
It's a shame, too. There are some great spots in that little tract of land that people should definitely see.