When this man made the decision to get baptized proclaiming his faith in Christ he was rather excited. So he stated his faith, the pastor lowered him into the water, but instead of gracefully coming back up this man literally leapt back up.
His joy overtook him and in his excitement he actually knocked the pastor down.
You've just gotta smile at his excitement to start a new life with Christ! Can I get an 'Amen'?