Last I heard yes you can camp there, however Spider Lake is more than 25 feet from the trail, so you would have to carry all your gear to the lake (no vehicles...)
There is areas that one can camp at, but some of the area around Spider Lake is privet land, and other is closed off even to foot traffic. As Eric said you can't drive/park over 25 feet from the center of the trail and will have to walk all you your gear/camping equipment to the lake area.