I think Brandon's rationale is that he is a professional model who gets most of his work because of his awesome hair. Cutting the hair would cost him jobs. I guess that makes sense, but if you won $1 Million you could take a year off and grow your hair back. I was so impressed with the couple that actually shaved their head (different season, maybe), but the woman had long braids and shaved it all off - and they won. Her husband was already bald, so it was really on her, and the short 'do looked good on her too.
back to the God Squad - I have no problem with people having a religion, and I think that the show likes to play up that aspect for ratings reason. The real question to me is whether they are following through with their faith, which in my humble opinion means showing others (locals, competitors, cab drivers, well, everyone) respect and dignity, and treating each other with love?