Possible Clues:

• Set at opposite extremes of opinion
• Missile with onset of explosion split in two
• After inconclusive vote, emerge and create sharp division
• Divide people by broadcasting a spoiler
• Divide pair: lose fake
• Significant star and mate ultimately put into separate camps
• Post includes Sir coming back with a way to organise set of different opinions
• Separate group wanting nothing before a hike
• Return to cut crop up and divide
• Cause to adopt extreme positions - lose pair (anag)