I saw that task again ..Sid dint say a word against sana...he was talking about paras and how he is loyal to mahira jisse character ka pata chalta hai ..watch it again ..this was actual epi ..promo of this looked like he spoke fr sana but it was fr paras ..this was in context of Asim saying Sana loved Paras ..so in return Sid made it clear that paras was always loyal with mahira..
He cleared sana ka name indirectly..
So he was mad at sana fr misjnderstanding his words..
Watch the epi carefully again ..