I think this may be the reason.
http://www.india-forums.com/tellybuzz/article.asp?id=5896
He says "At one point of time I became suicidal. I went to the confession house and told Bigg Boss that I want to commit suicide. After that only Bigg Boss gave that mental asylum task and my clipping was shown to make me feel better" .
What a nautanki.. I can just imagine how much drama he must have done in the confession roomđđ.. He managed to scare the living daylights out of bb toođ