Most of TFF was actually a bad dream experienced by Spock due to trying out McCoy's beans (which are apparently a mild hallucinogenic for Vulcans) and this is why the final scene takes place back in the forest where they were in the beginning of the movie, it was supposed to be the next night. Unfortunately Shatner was a sucky editor as well as being a sucky director, so he cut out the whole sequence where Spock wakes up and realises it's a dream in order to keep the Uhura/Scotty romance scenes, and this actually led the audience to believe that the events involving Sybok and God were real. Of course this is ludicrous because the crew of the Enterprise aren't really clueless idiots, and Spock doesn't even have a brother, but to this day some people still believe that the events of this film weren't a dream.