I would help at this point too.
Personally, I don't bother with the whole taking it in the bathroom thing, but then I'm in the humid south so maybe it's different elsewhere. What I do is get some hot water into the incubator with a tube so that the humidity shoots through the roof inside the bator. Then I open it quickly, do what I need to do, and shut it back again.
Personally, I'd take the little guy out (however you decide to do that) and unzip him S-L-O-W-L-Y. I'd prepare a separate recovery brood box ahead of time, with a towel and a lamp in a box. There are detailed instructions elsewhere, but basically you gradually zip the egg in the direction the chick would do it. If you see blood (not just a little dark red old blood, but bright red fresh blood), stop immediately and put it back in the incubator for about fifteen minutes--or under the brood lamp, which you should be able, by raising & lowering, to get pretty close to 100 degrees.
Once the little one is zipped, it's best to let it try to pop out. If it doesn't do it within an hour, though, go ahead and pop the top and set it back in the recovery brooder until it comes out and is walking around.
Good luck. I think it's ready for help too.