As much as I love your speculation, I doubt it is possible for Sasuke to execute Izanami. First of all, Izanami is used solely to counteract Izanagi. It creates a loop using senses other than sight (smell, hear, touch, taste), which cannot be broken until the opponent "chooses" to. If you are mistakenly referring to Izanagi, it seems illogical that Sasuke would waste his (well, Itachi's) Sharingan, thus limiting his power with the Mangekyou. Besides, unless Hashirama let Sasuke properly implant his DNA into himself and taught him a ****ing dojutsu, this is a far-fetched concept.