You could say it was the Rambam. Yes, his 13th principle of faith is "The dead will be resurrected." But he made it clear he believed in a spiritual, not a bodily, resurrection, saying:
All men must die equally, their bodies becoming dissolved into their constituent matter. [Rambam, Introduction to Sanhedrin 10]
There are no bodies and no bodily forms in the World to Come… There is no eating or drinking there, nor is there anything which the human body needs in this world. Nor does there occur there any of the events which occur to the human body in this world, such as sitting, standing, sleep, death, distress, laughter, and so forth. The ancient sages say: "In the World to Come, there is no eating or drinking or procreation, but the righteous sit with their crowns on their heads and bask in the radiance of the Divine Presence... There is no way for us in this world to know or comprehend the great goodness which the soul experiences in the world to come, for in this world we know only of material pleasures, and it is these we desire. [Rambam, Yad, Teshuvah 8]
The Ravad countered:
The words of this man seem to me to be very near to those who say there is no resurrection of the body, but only of the soul. By my life, this is not the view of the Sages. [Rabbi Avraham ben David of Posquières on Yad, Teshuvah 8:2]