No, this is the end of the road (the case was decided by the Ninth Circuit Court of Appeals, which is the highest level of appeal court in the federal court system except for the U.S. Supreme Court - and this case has no chance whatever of being of sufficient interest to the Supreme Court for them to want to review it).
At the same time, the case has almost no precedential value even apart from its poor reasoning. A narrow class of cases come before the federal courts that deal with straight state law issues, and they are decided in federal court only because there is a diversity of citizenship between the parties (i.e., the parties are citizens of different states). When a federal court decides such cases, it is forced to interpret state law and its decisions are regarded as minimally persuasive (because the state courts are their own best interpreters of state law). Thus, even if it were well-reasoned, it would scarcely carry much weight for future decisions in Idaho. And, since Idaho law is all that is involved, it would carry no weight at all for cases arising elsewhere.
