If your kid has bad case of diarhea at Target Store, is it ok to monopolize the only public bathroom?

It is holidays rush and many people are shopping. A mom and her boy tells the Target manager to prevent access to the mens bathroom cause her son had really bad case of diarhea and it is embarrasing for him to be seen by strangers in this manner. The manager stands in front of mens bathroom and tells guys they cannot enter and when asked if there is any alternate bathroom nearby, she rudely says no and please be understanding of the kids situation. The kid andis mom stay in their for over an hour and the manager guards the bathroom? Um, shouldn't the kid be in the hopital rather than a bathroom if his diarhea is lasting over an hour?