I have been saying something similar for a while now. Cruz has been stuck at 5-6% in the polls for months and is getting no traction. He needs to shake things up in his campaign.
Also Cruz does not smile often, and when he does it tends to be condescending. The 'expert' said he needs coaching and fast.
I think Cruz is stiff at times, but I can't necessarily agree with all that the 'expert' opines.