This sounds kind of scary and fast, and also kind of aggressive. We build up defense mechanisms to protect ourselves; they are there for a reason. To just take them all away in one session sounds scary to me. Make sure you have a lot of trust in him and feel very SAFE with him before allowing him to do too much. It can actually be damaging. Be careful. Tell him if he is going too fast.

Good luck. Therapy can be life-changing.