I was on the range one day and the only other person there was a member's wife, who has a rep for being a little loopy. She was hitting balls and releasing her club and throwing it down the range on her followthrough. Since there wasn't a lot of people around, so she was able to walk out and get her club every time she threw it. I finally had to ask her WTF she was doing and she said that she wanted to get the feeling of finishing the shot by releasing the club. I just shook my head and walked away. FAR away.
I've actually heard of a drill where you drop the club as you complete your downswing, but you don't throw it. Supposedly it helps get you more in sync with developing lag and temp.