Another recent article that can be argued supports behavioral therapies incorporating "Prolonged Exposure" to feared stimuli, rather than detracts from them, is by Harned DOI: 10.1080/10503307.2016.1252865
Evidence supposedly for people being negatively influenced by behavioral techniques seems to be a single study by German psychodynamic therapists, but this study failed to incorporate treatment fidelity measures. So who knows what "treatment" those said to be receiving Behaviour Therapy really received -- if your allegiance is to a different form of therapy (psychodynamic) and you have a negative preconception of a particular form of therapy (BT), then you might act in ways that are harmful (unconsciously, of course) to patients receiving that form of therapy (more negative therapeutic relationship?).