Instructors really need to use stress coping mechanisms to appropriately handle stress. Medical literature points the need of using coping mechanisms to properly cope with stress (Myers, Fleming, Lancman, Perrine,& Lancman, 2013).
Reference
Myers L, Fleming M, Lancman M, Perrine K, Lancman M. (2013).
Stress coping strategies in patients with psychogenic non-epileptic seizures and how they relate to trauma symptoms, alexithymia, anger and mood. Seizure. 2013 May 17. pii: S1059-1311(13)00131-3. doi: 10.1016/j.seizure.2013.04.018. [Epub ahead of print]