I'm confused regarding post 14.
If Stuart Broad (or any prospective passenger) attended a medical, surely the doctor would have a clear "Yes" or "No" as to whether the person could fly. I don't understand the "might" part of it.
If the doctor signed him as fit to fly in all medical respects, he could have flown. If he had to ask his mangement company/agent whether they would give permission, that's his problem and perhaps he shouldn't have wasted the doctors time as he could have asked them prior to the medical being booked.
Just a thought.