There is a flight or fight response which can be stimulated in every labouring mother. This response is located in the old lizard brain, which is out of date. Labouring mothers do not usually labour in a very hostile or dangerous environment.
Many people can activate this in the laboring mother. It can be a mother who has unfinished business with her daughter, and she will be viewed by her daughter's unconscious part of the brain, as a predator.
It may well be a kind male partner who of course has no hostile intentions to his partner, but we are talking about a very primitive response, which does not respond to reason. In this situation an anesthetic will be required for labour to recommence.
It usually takes a very experienced midwife to detect this, and who has the skills and compassion to deal with this response sympathetically, and professionally.
If the fight or flight response has been activated, in my experience, using the upper body only, strenuous exercise has been found to discharge the surplus adrenaline. This can be done, kneeling or in a supine position. , and then labour can recommence with out undue pain and distress present.
In my view a male partner is no more likely to activate the fight or flight response, than a woman, if he has been trained to assist his partner in how to discharge the adrenaline.
If physical exercise is not undertaken, in my experience the cervix will cease to open, and if action is not taken to discharge the adrenaline, the labour will soon react with failure to progress. Labour will then become painful and protracted.