If we think from his point of view there are many reasons why he was under impression that he will not win:
1. BB showing his videos of his fights wth Tanaz on friday just a week before finale. That surely go against him in voting. Now that still remains a mystery why Ab was talking so much of Tan on friday and why those videos are shown?
2. Aditi going out. He knows his nature that he cann't decide or act on his own. He needs support from a family member or friend. With aditi going out he was prone to make some blunders which would result in less voting for him.
3. Inside the BB house he was not sure how much support he has got outside. How could he know that Tan has created a big fan base for him and she is working day and night to make him win.
4. The videos reminded him of injustice he has done to Tan and probably he has fear that Tan may leave him for that. The first best opportunity to come out of the house came and he accepted that.
5. Over confidence of vindoo made him beleiive that his chances of winning are less.
Probably when we will keep ourself in his place we may would have done the same thing. So I don't have any hate for him. I voted for him because I don't want him to lose and am happy that he came out on his own and hasn't lost because of less support from people.
Would pray for him that God make him a more independent person and give him the wisdom to have more self-confidence.
Thats all I have to say. Hope people wont start bashing me or him for this. He is out of the game so lets not fight over how he behaves or does things. Hope the best man or woman win now.