Hi folks, I appreciate your help and advice!
This is on an exterior door, it’s a Schlage deadbolt.
I’ve removed the two screws and faceplate from the inside. According to the several Youtube tutorials I’ve scanned, the next step is simply grasping the outside housing and pulling it free. But I can’t seem to pull it free. Gentle taps from a hammer didn’t dislodge it. (I’m also confused because in all the videos it seems there some sort of squarish or round axel/bar, but the axel on my lock is prominently corkscrew-shaped. )
As you can see from the pictures, I was able to remove the screws from the side of the door, but that doesn’t seem to have helped me.
Please let me know if you need more pictures or other information!