Why was the J&K PM changed in August 1947?

ISLAMABAD: Kashmir Freedom Movement dates back to 1832 and not 1947. Allama Muhammad Iqbal had first observed Kashmir day on 14th August 1931. Ram Chandra Kak, the Hindu prime minister of state of Jammu and Kashmir, favoured Pakistan. Lord Mountbatten appointed Mehr Chand Mahajan in place of Ram Chandra Kak at the behest of Nehru and Gandhi. The Instrument of Accession, the legal document of state of Jammu and Kashmir’s acceding to dominion of India has been declared controversial by several Indian and British authors. Indian scholar Arundhati Roy rejects the idea of Kashmir’s accession to India. Youth in held Kashmir have been exposed to worst physical torture like being injected with petrol injections. Any non-conventional solution to Kashmir conflict is likely to fail in the presence of Article 257 of Pakistan’s Constitution. These facts were stated by Geo News anchor Hamid Mir in the show ‘Capital talk’ on Wednesday. In his special show, for 5th February, Hamid Mir, in the light of references from several distinguished books and documents from British Library of London, established that the Kashmir’s freedom movement began in 1832 from Palandri and Mong, where Muslim dissenters were skinned and their skin hanged on trees. An incident of blasphemy against Quran triggered the movement again in 1931. And Kashmir day was observed in Lahore by Allama Muhammad Iqbal on 14th August, 1931.
Hamid Mir in his research states that Pandit Jawahar Laal Nehru wrote a letter to Mountbatten on 17th June 1947, demanding removal of Jammu and Kashmir’s Prime Minister Ram Chandra Kak from his post. Mahatma Gandhi made the same demand to Maharaja Hari Singh on first August. And subsequently Ram Chandra Kak was sacked on 11th August 1947. Mountbatten sent Mehr Chand Mahajn, a judge of Dehli High Court to Srinagar on temporary leave, in his private jet. Mehr Chand Mahajan was made prime minister of the state. He started working on state’s accession to India.
Taking Dogra army’s atrocities against Muslims in to account, tribal army attacked on 22 October 1947. According to Hamid Mir, Indian author Prem Shankar Jha claims that instrument of accession was signed on 25th October. Indian government claims the document to be signed on 26th October. Prime Minister Meher Chand Mahajan claims the signature date to be 27th October. British author Alastair Lamb has expressed doubt over signing date, while according to American author Stanley Wolpert, Indian army occupied Srinagar on 27th October and Maharaja Hari Singh singed the instrument of accession after that.
Hamid Mir establishes that occupation of Kashmir was result of India’s joint plan with Mountbatten. He also said that in the presence of article 257 of Constitution of Pakistan, the only possible solution to Kashmir conflict is through UN resolutions. Any out of the box solution is not possible. Hamid Mir spoke to Babar Qadri, lawyer in Srinagar, who told that the youth in Kashmir are exposed to torture like being injected with petrol injections. Human rights activist Tahira Abdullah demanded investigation in to atrocities against women in Kashmir. Law expert Ahmar Bilal Sufi held that Freedom struggle of Kashmiri people could by no means be declared terrorism. Indian scholar Arundhati Roy demanded of the U.S to use influence in resolving the conflict.