Lol at people saying Sasuke doesn't have the cloak anymore. Haven't we learned our lesson? Rewind it back like 3 chapters ago and we find that Kurama's chakra stays withing the users body, regardless of whether it shows. This was further backed up when Naruto reactivated his small amount of chakra in every ninja and had Minato teleport them. Sasuke received some chakra, therefore, he has some of Kurama's chakra; even right now.
I wouldn't be surprised if Sasuke's EMS did come from Naruto's chakra powering up the Yang half, however I agree with most of the members here, that there simply is no proof that Yin + Yang chakra is required to activate further down the susanoo progression line.