It is a solid possibility, especially given that Madara claimed to be the only one could see through Hashirama's clones.Loved how it was a wood clone that fooled Madara in the end after he bragged about using it against the 5 Kage lol
However its brings up questions, did Madara merely pretend to have died?
Of course, that raises the question of how he managed to dupe Hashirama into believing he was dead and obtain his DNA.