Yes, he did. With REGURLAR/BASE sharingan. Do you know how big of a difference there is between Base Sharingan and EMS sharingan? Read what Kurama says! It came right out of HIS mouth! Do I really even need to repeat what he said?
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"
UNBELIEVABLE, to think that you would be able to
suppress my chrakra"
Stop trying to weasle out of this COLD HARD evidence. Its like right there, what more proof could you possibly need?
Look at what else he says. "Eyes with such power even more sinister than my own" "
Not at all unlike what I saw in a certain UCHIHA MADARA". Who once controlled Kurama? MADARA did. Who did Kurama compare Sasuke to? UCHIHA MADARA!!!
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People, for christ sake the evidence is RIGHT ABOVE. Therefore, until further notice from the manga, it is safe to say that EMS has the potential to suppres s Kurama's charka!!!
If Sasuke did this with BASE/REGULAR sharingan, what do you think he could do with EMS!?
This just obliterated SOOO many counter arguments on your side dude.