BMI is garbage- it simply puts height against weight.
I'm a body builder, only about 12% body fat but according to my BMI I am obsese- some hardcore lifters would be considered morbidly obese.
It was developed in the 1800's by a Belgian scientist and does not take into account body composition, body fat percentage or overall health.
If I was subject to this ruling I would be making a hell of a lot of noise- you can't punish a healthy body builder simply because a number based on 19th century mathematics is applied to him (or her) that has no basis on overall health.