HELP!!! Reroute metal vent stack

I am in the process of remodeling a 5'x7' bathroom into a master bathroom with jetted tub, walk in shower and double vanity. In the process of demoing the walls, I find a beautiful metal vent stack right in the middle of the wall. Now I considered turning this into a stripper pole but I find that a little awkward (kidding). There is a toilet drain and shower drain pipe connected to it and it runs into the main pipe which runs toward the brick out. Also there is a cleanout right where it connects to the main. How can I reroute this pipe to where it ends up inside the bathroom wall. What is the easiest way to do this?