I don't think I quite understand why the doc allows full weightbearing in the forefoot. (like for spinning)

Does he/she know that when a person pedals properly they are weightbearing on the ball of the foot? And if you stand to pedal, it's full WB?

Before starting, I'd call the Doc's office and make sure they understand that you will be putting all your leg's pressure thru the area of the broken bone when you spin. Just in case.

(Trek420 made a major mess of her busted toe doing a long bike ride. Don't let it happen to you! )