How to exit surelock
I finally found the soultion with the help of my techie friend

connect the device throgh USB and run the command:

adb shell am start -a android.intent.action.MAIN -c android.intent.category.HOME


a window comes up. select TouchWiz Home and select Always
android home screen will come up. reset the device and there you go... surelock is gone.

Thanks to Léa for this solution.