You should be fine finding your way - the trail was mostly clear of snow and fairly easy to follow until reaching the slabs above Mirror Lake.
Leaving Lone Pine Lake just make sure you don't follow the tracks leading left up the draw - instead head straight toward the switchbacks that lead up to Bighorn Park. Once you are above Mirror Lake and over the slabs you will lose the trail under snow pack but it is fairly easy to find your way to Trail Camp - just continue up the draw with Trail Crest visible in the distance.
