i agree with harwinder84... i wouldn't have even waited for the second time he hit me... once somebody hits you once, that too, for no reason at all, it's time to defend yourself... you did the right thing, and no matter what anybody at your institution says, he hit you twice first before you did anything... and for that reason, you won't get into trouble, don't worry... good thing you knocked some sense into him, man.. a sikhs dastaar is not something to be messed with....
fateh..