Hi Shubha!
I certainly hope you are right! It does look like there is more to all this than meets the eye. I can't believe Khushi would turn to Shyam, especially after the explosion on the bridge and the subsequent charade by Shyam in front on the family. Khushi definitely noticed the tension between Arnav and Shyam today.
Besides after taking 3 months to bring the MU into the open between the leads (i'm so glad both spoke their mind without holding anything back), it just does not make sense for the CV's to increase the MU and portray Khushi as so naive. Plus i think Arnav will be a bigger fool if he signs the documents without reading them properly esp given that he does not trust Khushi completely at this stage.
I think they are creating suspense and twists to stretch the story to make room for Barun's leave and bring in some drama to fill the episodes. Plus this may lead to some more Shyam-Khushi interactions which will lead her to understand that Shyam has poisoned Arnav's mind against her. Lets see how it plays out..