Arre, He might have slipped into the current and instead of fighting the current and drown by getting tired, he might have simply followed the current and kept floating.
Dont think too much. No person will go into enemy land in this manner to get caught.
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Treated better than expectation? Ohh ya. He expected his head rolled off but was sent in 1 piece.
On serious note. Pakistan did it to maintain impression internationally. This event has only helped them move a step forward.