I'm sure someone who is official will clarify but I believe the way this rule works.....you can get help from a fellow RIDER, you cannot get help from someone that is not IN the race. At the round at Cycle Ranch, someone went to hand a person a fresh set of goggles and everyone around screamed NO!!!.....we were like...what? They said the person would have been disqualified if an official saw that.
Another person could not get her bike started after kicking for like 10 minutes with a guy standing closeby. She looked at him and he said "if I help you, you'll be disqualified"....so, looks like a rider can help, but someone else cannot. BUT....I'm not an official!! This is just what I heard at one round last year....