My Subie & Me,
Sorry to hear about the road status. The USFS 2N93 road is part of the San Bernardino National Forest Mountain Top District. You could try calling them and giving them the road conditions you experienced. Also maybe they will know when the road might be graded or repaired to Wildhorse Meadows?
Mountaintop Ranger District & Discovery Center
41374 North Shore Drive, Highway 38
Fawnskin, CA 92333