After this week's duel, everyone still in the game will have had a chance to witness a duel.The timing is perfect for a double boot this week (EP6), with a triple duel to start off next weeks episode (EP7).
Next week (EP7), everyone left in the game could be invited to watch the triple duel; tree mail telling them that the winner would be returning to the game.
The surprise twist, announced after the duel, would be that the tribes have merged and they would all go together to the merge camp to celebrate.
Based on the editing, we can assume Matt wins, and could finally reunite with Andrea, while Stephanie could flip to join Rob's alliance.
Then the battle for individual immunity would take place and at TC someone would be sent to Redemption Island.
Redemption Island would either be vacant if both losers got booted or have the second place finisher from the triple duel, waiting for that weeks votee.
In this scenario, the newly merged tribe will have two HII's and II in play at TC...it will be great fun to watch!
Krautboy