When horton discharged its employee, ruben de la garza, the union appealed to arbitration. the arbitrator found that de la garza had violated a reasonable safety rule, but "was not totally convinced" that horton should have treated the violation more seriously than other rule violations. the arbitrator ordered de la garza reinstated to his job. can a court set aside this order from the arbitrator? when does arbitration usually happen? 1. 2. 2. in this case, the arbitration happened . 3. when parties arbitrate, the arbitrator is a third party. 4. usually, the parties agree that the arbitration will be . 5. the collective bargaining agreement limited the arbitrator to deciding?