I feel the same way bout CC deleting the evidence. But I have to pull back for a second and think that CC has always done things in a logical and intelligent manner. So perhaps deleting the evidence has a purpose. Besides, she had already shown it to UB. The mask, so to speak, has been removed.
The move? Yeah, there probably is an ulterior motive. But more than evil, I think it's the play of power. UB knows CC will not want to go, especially for Manav's sake. (Although I am with Resentful Ranjhan on this one!) So this is the way for UB to let CC know that she'd better tow the line, or else...!
Of course, they are not going to move. Because we have yet to witness the great clash in earnest. The day to day workings of the household and how the change is going to occur.
However, having said that, I could totally be incorrect. The CVs of this show leave everything so open ended that it could go either way. Those smarty pants!!