Not even sure why it crossed his mind. Someone above gave his decision to pass it as being from 40m out (that would give his decision some understanding) but as you say it was 30m out on a very slight angle. If you can't take that shot, then WTF are you doing playing AFL footy. We had the flow of the game at that time, we'd kicked the last 2, kick that 1 and we were in the ascendency and within 2 goals. They slingshot it and ice the game.
Stinker of a decision and no idea why he even made that decision, and thats not even taking into account the awful delivery of that kick, floated it on his head, was the easiest kick that their defender will need to spoil in his career.