Removing Tub Spout

I'm trying to replace our tub spout but I can't figure out how to get it off. I thought I could just unscrew it, but either I'm wrong or something is stripped, because it just spins and spins and nothing happens. Am I supposed to do something other than spin it off? Now I'm paranoid that with all my spinning I've weakened the connection to the pipe and I'll have a leak inside the wall. Any advice? Thanks!

There are two types of spouts (generally) - those that screw on/off and those that push on. It appears yours is a push-on type. Somewhere, visible through that notch on the bottom, is a set screw that you have to loosen first. Then it will just pull off. You may have scored the pipe making it difficult to seal a new one, but you won't know until you get it off. The push on type use o-rings to make a seal, and the pipe must be smooth for them to work. Clean any burrs or you may slice the o-rings when you install the new one.

Thanks for the response!

I don't see a screw visible through the notch on the bottom. And when I turn the spout, the white plastic bit, and everything else which is inside the spout, turns as well. So if the screw is somewhere else inside there, I can't access it.

I tried to immobilize the white plastic bit inside that notch so I could try and turn just the spout but not the inner bit, but I couldn't do that either.

Any other ideas?

Well with some creative use with a hacksaw, we found the screw and got the spout off. The copper pipe is indeed scored from the screw rubbing around it.

Thanks for the help!

The better diverter tub spout is made by Delta.
There is a brass fitting that solders onto the copper stub.
And then the spout threads onto that.