YES, I think this UPA government treated Dr.Kalam badly, because during his term as President, he showed himself to be a person of INTEGRITY, a person of high culture and personal DISCIPLINE. He was not going to be useful to them to "play politics with". Every speech he made was that of an impartial "technocrat" reflecting the fact that he had headed teams of scientists to refine India's rocketry, space transport and nuclear weaponry. He was not going to "wheel and deal" and "wind and nod" at the intrigues going on in New Delhi. The UPA did not, therefore, like to having for a second term. Horrible, isn't it? You may well say that a vegetarian, tee-totaler, not interested in making quick illicit money, who could talk about any spiritual issues, quoting the Bhagavad Gita has NO PLACE in Indian politics today.
You know, it is interesting, that another genuine person some of our UPA - Leftist people try to "rubbish"? Swami RamDev Maharaj, is learned in Sastras, is a nationalist and is well-informed on traditional medicine. The UPA and the Left do not like him. Do you see any parellels?