No, it is not possible to cancel the shutdown cycle on a Traeger grill once it has been initiated. The shutdown cycle is designed to ensure safety and protect the grill components during a power outage or other circumstances. It is important to allow the shutdown cycle to complete before attempting to restart the grill. Trying to cancel or interrupt the shutdown cycle can lead to potential safety hazards or malfunctions. It is recommended to follow the proper restart procedure after the shutdown cycle has been completed to ensure the grill operates safely and efficiently.