Moving it 2 feet the right, I hope? I would rip off all the drywall to inspect and allow for reinsulating, then I'd cut out all the piping and repipe it after framing in another interior wall. Best to do it properly now and once while you have the chance. While it looks like it should vent fine, that looks like a mess of poor piping and notched studs, making me cringe. Greg
On second glance, what the heck is that lower right black pipe?