Jayapataka Swami:  If you read the 12th Canto of Srimad Bhagavatam it tells Lord Krsna was hit in the heel by an arrow of the hunter, and they say the hunter was Vaali Maharaj. Because Krsna as Lord Rama, He shot an arrow and killed Vaali from a hidden place. So in reciprocation He allowed Vaali in his next birth as a hunter to shoot Him. But He went back to Godhead, went back to His own abode. Actually, you cannot kill Krsna but He allowed Vaali to shoot him. So there is a picture of Him going back to the spiritual world, His own abode.