For a moment forget about what Sheik did in the last seconds, it's obvious that he didn't mean to save anyone because he changed his vote from Janna to Gabriel and then he changed it back again. So, Deneb was going to get lynched if it wasn't for Sheik's stunt

Janna had only one vote less, Gabe was also close. Gs could have easily cast a couple votes against either one to save Deneb but noone came to save him. I think he's a C.