Obviously it's a mistake to go down a lot, but to me 90 overs is probably too much anyway. I don't like seeing field changes every ball but I'd rather see good bowlers than crap ones. However, can you elaborate on why, given the situation, bowling part timers was the right thing instead of trusting your frontline bowlers who had India under pressure to just finish the job before the day is over and removing any chance of being penalized for over rates anyway?
I know several people have said what you said, but most captains and others disagree, including me. I'm afraid I can't see the reasoning behind costing your team a chance to tie the series and retain an important trophy even if it may (just "may" - not a given) cost you one game in the future?
I am sure Pontign did it to show how they play within the rules, especially given Sydneygate and how their reputation as called into question, but I'm not sure he would have done it if Sydneygate had not happened (and the other former Aussie captains all agreed they wouldn't), and secondly, while I can sympathize with Ponting and his reasoning, I do think it displayed a shocking lack of sense.