Trial is '100% within the spirit of the game' says captain after scrutiny on team analyst's role
ECB says trial 'intended as a live informational resource captain may choose to use or ignore'
Malan had scores of 19, 55 and 99* in the three-match series, which took England past Australia to the No. 1 position in the T20I team rankings
Faced with a steep chase and an unfavourable match-up, Dawid Malan proved he is in England's best XI
Coach says defeat is part of bigger picture as South Africa strive to close the gap