As I said to DD17 last night, it just goes to show how easily religion can be used to deceive less-informed people.
Coach had the idol, he knew he had it, and he is a shrewd enough judge of character to realize this time around that the way to become very very popular with his tribe is the religion angle. Now I am not saying that Coach isn't a pious, religious guy, he probably is; but he analyzed Brandon and the others and saw how VERY much religion affected them. So he, in a position of knowledge ("I have the idol") used prayer to convince everyone else that the Lord was working miracles for them ("Look, we prayed about it and not 5 minutes later the idol mysteriously appears!") and POOF now the tribe is all united and happy-happy and Coach is The Leader.
I can just as easily visulaize this scenario as it has worked out countless times in history when a slightly corrupt Faith Leader whose followers are uneducated or ill-informed prays about something he already knows will happen, just to achieve the WOW effect when it does, and further cement his position as Leader and Closest to God.
SOOOOO tired of the prayer/Playing The Game for God angle - can't wait to see that tribe get destroyed at the merge.