He's fine. Catheter is out, but he has to wear the cone until Monday so his stiches can heal. I'm also having an x-ray done to make sure the leak was fixed. My idea -- the vets weren't too concerned.
Vet appointment on Thursday morning. Hopefully the catheter and stitches go away. The cone doesn't seem to bother him at all. In fact, I think he likes it. Because it makes things more of a challenge, which he likes.