Disconnecting quick connect fitting while hose is pressurized
The osha approved method would probably require depressurizing the hose prior to removing the male from the female disconnect. I do this at full pressure of 150 psi on my system all the time, I do use caution because the air shooting out the male fitting can contain rust or large dust particles. I grasp the male end in 1 hand and the female in the other, pressing in on the male end I slide the lock sleeve on the female and allow the male to start coming out but keep the fitting inside the female until depressurized this diffuses the blast of air and I have never been hit with rust or dust using this method.