input and consensus from the CORPS commanders is corner-stone to any decision making process in the armed forces (as would be consensus among Joint Chiefs when there are matters concerning the different branches of the armed forces)
I dont know much about it but it could very well be true. Kind of like how the ISI tipped off israel's Mossad service about intelligence it had received regarding a possible attack on Jewish targets in bombay
Later on towards the down fall of Musharraf, or I think when he was out of the picture, was not there a rumor that many of Musharraf's actions were his own individual decisions without corps commanders even knowing about those, it was I think when "Shamsi Airbase" issue came in media.