If we win against Lanka despite Sehwag failing yet again, Sehwag's failure will be forgotten by you and we are stuck with him for a year at least with sub-10 scores.
On the other hand, if we lose to Lanka (Sehwag will fail even then), you can say goodbye to the captaincy. We also, finally, get rid of Sehwag. If you aren't captain, he will not find place in the team.
What should we wish for? For India to make it to the Super-8 and lose later?
OR
India lose to Lanka, doesn't make te Super-8. You will no longer be Captain and we finally get rid of Sehwag!