As per Ashis Nandy, noted Post-colonial polemicist, Gandhi was killed by Godse not for religious reasons, but for seclar casue. Everybody was upset that Gandhi was asking Govt of India to pay some huge money to Govt of Pakistan which didn't make any sense in those tumultous days of partition.
Godse was LESS religious than Gandhi.
PS: Nehru/Patel didn't pay the promised sum top Pakistan by the way.
Gandhi never used "secularism", but Mani Aiyar is a self-proclaimed "secular fundamentalist".
Gandhi opined ban on cow-slaughter.
Gandhi also opnied Ban on religious conversion.
Aiyar is the last person who should take Gandhi's name. Because he is furthest from Gandhi;s philosophy.