apart from whether you control your emotions during a particular hour - consider:

T is not vulnerable in that room;
the client is.
Client is encouraged to dive into deep emotional waters;
T stays dispassionately on the shore, providing the beacon to bring client back to land.

The system is what it is. To me, there is no doubt about who is really in control.

Doubt me? Try it out.
T: we have to stop now.
Client: no, I think we'll keep going for a while.

yeh, right.