I think it is totally unfair to send Pathan back to India in the middle of the test series. It will badly affect the pacer's confidence. I believe his lack of form in the recent past is because he is lacking his confidence. He is under tremendous pressure to perform well to be the part of Team India.
This action of sending him back will morally affect the other team members and will help only to increase their pressure to perform well.
Also I wonder why the same treatment is not given to the same kind performers like Sehwag and Jaffer?? Did u saw how Sehwag throw away his wicket in the 1st innigs of the 2nd test match? His foolishness should be punished if Irfan has to go back India.
I conclude this move as totally unfair to Pathan and the entire Indian team