Well, I was originally thinking they could figure out what Pike was agitated about, which frustrated Mendez. But since Spock himself was the cause of Pike's agitation, Spock could have simply lied about the results of the mindmeld, or even faked the whole thing.
Though it could have had other uses, since Pike couldn't even communicate whether he wanted someone to leave him the hell alone for five minutes.
It's rough not having the episodes in my library anymore, so I could think these things out before making a stupid post.