I did wonder that, whether he's broken a rule by not having a bike with him. OTOH, the race organisers do have to take responsibility for him not having a bike in the first place as they're responsible for the person who ran it over.
In track cycling do you have to cross the line with your bike? I swear I've seen riders run over the line after a crash. That is just track cycling tho
maybe they DQ froome for running