Slow and Low full tosses has been proven to be a good ball in the death overs of T20, since it's difficult to hit low full tosses.
In the final over, it's really reading the mind, what the batsman is expecting... So I think he read it well to give something unexpected and that was effective.
[Post CWC15 Consistency Record: Test: W-0 L-1 D-4 // ODI: W-7 L-2 // T20: W-1 L-2]
Series: Pak, Ind, SA ..... (Won All ODI Series) Updated: 02 Aug 2015