If this fella falls short of the record and raises a shed load of money for charity, all of which gets to the charity, then who cares if he hitched a ride on his RV for early sections. He would not be the first ultra runner to cheat and will not be the last.
Charities are scams. Follow the money in this situation and you will see that there are suspicions. And they are scanning sponsorship money and appearance fees with their lies.