It seems to me that Bundy now has abundant grounds to file a suit of his own. He has lost before but the issue was his action toward the BLM, non payment of fees.
He now has grounds for a suit to settle the basic issue....does BLM own the land and have the legal right to enforce grazing rights
Any lawyer worth his salt will tell you that trying to overturn such a ruling of fact will be a heroic effort most likely to fail.