In treatment terms a herniation should always be ruled out but the neck should be kept moving. PS if any bladder or bowel movements become difficult to control or the loss of leg sensation occurs go straight to A and E.
good luck
I would like to know your reasoning behind warning about Cauda Equina red flags with a C-Spine injury.

Remember, "3-4-5, keeps the diaphragm alive." As opposed to the anus.