Well, not entirely. If you go out along the new walkway past the last cabin--8026--you will still find what's left of the sandy trail. It goes on for a couple of hundred yards, and at that point, it may still branch off to the right to hook up with the paved bike path. If you continue straight at that point, though, you will still eventually reach the back employee parking lot at FW as before. However, as
horselover implies, the notion of an actual nature trail, marked by a sign, is no longer.
Luv and I walked the trail back in July but didn't go far enough to see if the branch to the right still exists. In essence, once off the cabin pathway, you're out in the wilds to some extent, but as a runner, it is still an easy access.