How to permanently disconnect from a profile in a network game?

I created a profile for a friend on a network game and I know for him to take control I have to holiday the profile and disconnect from the network game. The problem is every time I load the game back up it defaults back to me being in control.

Is there a way to permanently disconnect my user from that manager’s profile?

I'm no expert, but you initially set yourself as the host and I don't think it's possible to change this, so no. You will always be the host and I don't know of a way to change that.